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Owner`s Manual

1. 50 OHM DC POWER PLUG TO COAXIAL PL 259 VEHIC LE S LIGHTER SOC KET a ie AC POWER CORD CONNECTION CONV ANT1 he ns AAA am AG 40 WATTS 50 60 Hz SUPPLY BEFORE 500 GND 500M CHANGING RANGES EXT 11 16 VDC IN E 50A 5A oo TIMER EXT OUT OUT MUTE x iN N re BOTH 4A 200VAC 200 mA 240VAC 200 mA TYPET ijabe NiS A INTERFACE AVIS risque AE ACE TUST AG MARKED ACIER ELECTRIQUE NE ATTENTION risque p iucENDIE REMPLACEZ FUSIBLE DU TYPE INDIQUE TO GOOD EARTH GROUND POWER SERVIC E G ROUND ING ELECTRODE SYSTEM OR mm P WATER PIPE s3353 TO PERIPHERAL EQUIPMENTWITH TIMED O N OFFCONTROLSUCHAS TAPE RECORDERS EXTERNAL SPEAKER MS8 TO PERIPHERAL TO PERIPHERAL EQUIPMENT WITH LINE AUDIO EQUIPMENTPROVIDING INPUTS SUCH AS C W RTIY MUTING CONTROL SUCH AS TRANSMITTERS EEA TERMINAL REC ORDERS ETC DEMO DULATORS TAPE J FIGURE 3 INSTALLATION DIAGRAM Front Panel Description SIGNAL MHz Ew ope AUTO AM SYNC SCAN kHz 7 4o tse use MEM SEEK DECIBLES LIST TIME TUNE a B a A B CARR VFO A B PRE ATTN AGC S F A B ANT 1 2 VHF NOTCH a step LOCK AW sme pails x LSB USB 12 O
2. SCAN mode or to load contentsofindic ated memory channel into indicated VFO Scan All Scan All Scan From MODE Unlocked Unlocked Ato B Memory Memory Channels Channels of User Selected METHOD Lists 7 MEM LIST 5 A B s Stop at First Carrier detected F 1 F 2 F 3 F F 4 PA m Pause at Detected Carrier 5 F 1 F 2 F 3 Seconds Then Resume SCAN F 5 F 5 F 5 Pause at Detected Carrier until F 1 F 2 F 3 caRR Carrier Drops for 5 Seconds F 6 F 6 F 6 Then Resume SCAN Table 3 Scan Functions 20 Scan Functions continued SCAN MEMORY LIST BLOCK The memory channels 000 to 999 are partitioned into 100 LISTS blocks with each block having ten memory chan nels total of 1000 channels See Table 4 A Single listscan Press F 7 selects list scan Result LISTfla shes in status area prompting a Lit Number entry 00 99 Enterthe desired List Number Forexample to scan 340 to 349 press for List Number 34 Ind ex T BW MODE Number aA Mae ANO a Yt lt 12 ON OFF k mr ws pane aoa eae e Cate List Memory List Memory Number Channel Number Channel 00 000 009 26 260 269 05 050 059 31 310 319 10 100 109 37 370 379 15 150 159 42 420 429 20 200 209 99 990 999 Table 4 Examples of Memory Channel Blocks Note tha
3. VPM to exit use keypa tuning wheel Press m hold until d to enter channel number or use MEM TUNE is displayed Use keypad or to or the Use tuning wheel to change frequency P ress Wkrz MV Select memory channel to be locked F Select memory channel to be deleted Press r Will move memory contents to last used VFO 3 press LOCK 3 press hold until 2nd beep SCAN MODES All SCAN modes require selecting one of three SCAN METHODS Select desired SCAN MODE and then select SEEK TIME or CARRIER Scan Memory page 19 Scan List page20 Scan Multiple Lists page 20 Scan A B page21 Press F Press F Press F Press F Press F Press F Press F 3 press 3 press orpress F 3 press Pa 3 press 3 press orpress F 3 press to select method Press s 3 y press number AAN or Press F Press F Press F 3 press 3 press or press 5 3 pres Press 1 then select method 3 press or Press SCAN 2 enter two digit List number 3 press or Os
4. WARNING TO PREVENT FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE TO RAIN OR MOISTURE iWARNING RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACk NO USER SERVICABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL Important Safeguards i An appliance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the appliance and cart combina tion to overturn The lightning flash with arrow head symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of impor tant operating and maintenance servicing instruc tions in the literature accompanying the appliance WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE DO NOT OPEN THE CABINET REFER SERVICING TO QUALIFIED PERSONNEL ONLY CAUTION TO PREVENT ELECTRIC SHOCK DO NOT USE THE THREE WIRE CORD WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE ATTENTION POUR PREVENIR LES CHOCS ELECTRIQUES NE PAS UTILISER CETTE FICHE POLARISEE AVEC UN PROLONGATEUR UNE P
5. lt B W W VFO A B PRE ATTN AGC S F A B ANT 1 2 VHF NOTCH Hz EW ope AUTO AM SYNC kHz 60 4 0 LSB USB 2 3 1 8 CW FM NOTCH TONE N O 0 5 RTTY 12 ON OFF W TIMER CLK FREQ STEP LOCK PASSBAND OFFSET SQUELCH VOL RF 0 FIGURE 14 TIME DISPLAY The receiver incorporates dual time clocks allowing two 24 hourclocksto be set and maintained During loss of AC power clock operation is maintained fora period of approximately 30 minutes The two event timer functions are also derived from the last displayed clock therefore the clocks must be set first for proper TIMER operation TIMER Settings are maintained through a power loss Pressing the C LK FREQ function button will toggle the display between the time of the current clock and the operating frequency Pressthe f button followed by the button to toggle between the two clocks L and U Nomally the clock accompanied by the Lon the display will be set with the local time while the altemate clock will be set to display GMT UTC time The receiver will display the selected clock when the POWER is tumed off SETTING THE 24 HOUR CLOCKS Select local D oraltemate time clock by pressing the F button followed by the button With the i displayed pressand hold the lt button for three seconds until the colons begin flashing rapidly If the Lis illumi
6. 230 Industrial Drive Franklin Ohio 45005 U S A Customer Service and Parts Telephone 1 513 746 6990 Telefax 1 513 743 4576 World Wide Web Site http www rdrake com
7. The two digit Index number 00 99 servesto catalog multiple List number entries Press the or button to scroll to N successive Index numbers At first the List number will be indicating that no list hasbeen entered Enter the first List number as two digits 00 through 99 correspond ing to a block of ten memory channels To enter Yd Ses another list number press the or button Index N number changes followed by the second list number Repeat the processto enter all desired Litt numbers Forexample to scan memory channels 340 to 349 400 to 409 and 000 to 009 aN m re ss A B SEEK SEEK DEL DEL DEL p 3 4 r 14 To review the current setup pressthe or button Attempting to scan an empty list will result in an errortone and requestfora new value To cleara single entry press To clear multiple Lists press F l Select method SEEK F orTIME F or CARRIER F Result SEEK TME or CARR lights in status area Adjust squelch to quiet receiver audio Press sea Scan flashes in status area when scan is activated and display will indicate MEM SCAN until sc an ning detectsa cameron a scanned channel mm Pres
8. and an ending time of 18 00 and a second program on the same frequency with a beginning time of 18 00 and an ending time of 19 01 Action Press and hold the TIMER function button until the LON annunciator flashes F BW MODE AUTO AM SYNC SCAN 2 6 0 4 0 LSB USB MEM SEEK eae 2318 CW FM LIST TIME MERE 05 RTTY A B CARR 1 ON VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 1 2 VHF NOTCH NAME STEP Lock Press the sequence e a q i 6 15 F BW MODE AUTO AM SYNC SCAN w 6 0 4 0 LSB USB MEM SEEK m 231 8 CW FM LIST TIME MEM Ogg 05 RTTY A B CARR 1 ON VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 1 2 VHF NOTCH NAME STEP Lock Press the TIMER function button Press the TIMER function button enters no OFF Time for timer 1 F o BW MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK A 231 8 CW FM LIST TIME MM Ogg 05 RTTY A B CARR 1 OFF VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANTG 2 VHF NOTCH NAME STEP Lock Press the TIMER function button BW MODE es os AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM
9. isperhapsthe easiest mode to use onthe receiver Whenthe FM mode isselected the receiver defaults to PRE only No AGC or BANDWIDTH settings are used in FM mode In fact attempting to activate these buttons will result in an erorbeep Addi tionally NB NOTCH PASSBAND OFFSET and RF GAIN controls are not used Most FM transmissions are above 29 MHzand are gener ally amateur radio in nature A very active frequency when conditions pemmit is 29 660 MHz Peculiar to FM transmissions is the fact that a stronger signal on the same frequency or close to the same frequency willcompletely coverup a weakersignal Also there are no controls to help reduce or eliminate an interfering signal Thisisnot a fault of the receiver but of the FM mode of transmission However to help in elimi nating the background hiss the SQUELC Hcontrol may be used to quiet the receiver during periods of no signal Gain and AGC OPERATION In a basic sense gain means amplification AGC isan abbreviation for Automatic Gain Control Thus AGC helps tune in weak signals by conveniently amplifying them automatically When a strong signalistuned in the AGC automatically reduces the amplification since it is not needed Thisalso prevents overloading the receiver and minimizes distortion When factory supplied AGC can be selected to operate S LOW or F AST The SLOW AGC setting isused forreception ofSowlyc hanging signal levels such as SSB signals The FASTAGC setting
10. st enter List number to review list Select method Press 4 orpres F 3 press or Enterone endpoint frequency or Entersecond endpoint frequency Press S4n to enter additional Other Controls Used in Scan Mode Passband Offset Squelc h RF Adjust foroptimum reception Set squelch counterclockwise Adjust RF gain counterclockwise until Smeter indicates desired signal level to trip squelch Advance the Squelch control clockwise until the audio just quiets Advance the RF gain fully clockwise TROUBLESHOOTING Symptom No front panel display or lights when power is depressed Scrambled front panel display when power is depressed No signals heard when antenna isconnected or sensitivity low S meter indication but remains constant S meter indication but no sound heard SSB signals have excessively high or low frequency response No front panel operation i e tuning frequency entry etc Timer does not operate Directfrequency entry willnotwork Probable Cause A Powerconnection B Blown supply fuse A Microprocessor malfunction A Squelch enabled B Incorrect antenna input selected C RF ATIN enabled D RF gain improperly set A RF gain improperly set A Improper mode selected B Extemal speaker selected C Squelch enabled A PASSBAND OFFSET impropeny set A Lock
11. 000 through 999 NA NI C nnn PR _ nnn CRAND LF CRAND LF CRAND LF 3 Information Retrieval Identify Receiver 5 Output Control 8 On Off Report 9 Report the Scan List 9 RA report Channel Frequency Mode Name and Signal Strength RC report Channel RF report Frequency RM report Mode RN Report Name RSS report Signal Strength RSL report Scan List ID OO OF RA RC RF RM RN RSS RSL Combinations of these report commands may be made Forexample RFN will report both Frequency and Name If an R isincluded a repeat of the report will occur approximately every 5 secondsor at every scan change such as RFR R8B n CR LF CRAND LF Scan Report Scan Report 4 Scan Functions Scan Method 2 MEM LIST A B Scan Mode 2 SEEK TIME CARRIER Start Stop Scan 2 Toggles Scan On Scan Off Scan Transfers the current VFO A or B to the A B scan limits Scan List Allows entry of lists to scan any 20 of a possible 100 lists 00 99 any undefined entnes are cleared S1 2 S3 S4 5 S6 SC SCO SCF SA SB SL XX XX XX al CRAND LF CRAND LF CRAND LF CRAND LF CRAND LF 5 Clock amp Timer Functions Timer Disable Timer Enable TD 1 2 TE 1 2 CRAND LF Timer Relay Control Off On Activate Deactivate Relay on Squelch Break Local Time Report Entry TF TO TSO TSF TL hhmmss CRAND LF CRAND LF CRAND LF UTC Time
12. F NB N W TIMER CLK FREQ A B ANT T 2 VHF NoTcH NAME STEP Lock Pressthe TIMER function Bw MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK BAR 2 3 1 8 CW FM LIST TIME MM Gog 05 RTTY A B CARR 20N VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 2 VHF NOTCH NAME STEP Lock If it is desired to set Timer 2 use the same procedure as that for Timer 1 otherwise press the TIMER function button twice to exit setting Timer operation and retum to normal frequency display 24 It is important to note that the timer is enabled only when the timer is deliberately changed froma to 1 or to 2 Even if the Lor 2is already displayed the timer is not enabled unless the to lor 2 transition occurs 2 Example for Setting Events on Two Different Memory Channels eg PROGRAMMING MEM 008 in Timer 1 MEM 029 in Timer 2 With frequency displayed Press m followed with the numeric button sequence DEL DEL LAMP 0 o r 8 a Press the timer function button followed within 2 seconds by depression s of the button until the Lis displayed with MEM 008 indicated Even if the Lis already dis played the timer is not enabled unless the to 1 transition occurs BW MODE a AUTO AM SYNC SCAN 6
13. Lor2 annunciator will continue to be displayed after the receiver istumed off Be certain to leave the volume setting at the desired level The receiver will automatically tum on and off asprogrammed If both timers are disabled the timer programming in eitheror both timers is retained but no TIMER action will take place untilone orboth are enabled 1 Example for Setting Timer 1 With frequency displayed suppose it is desired to set Timer 1 fora local ON Time 16 59 OFF Time 18 01 Action Press and hold the TIMER function button until the LON annunciator flashes F BW MODE AUTO AM SYNC SCAN A 6 0 4 0 LSB USB MEM SEEK 2 3 1 8 CW FM MEM Ef E ET LIST TIME TUNE H FT 05 RTTY A B CARR 1 ON VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 1 2 VHF NOTCH NAME STEP LOCK Press the sequence e F BW MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK ean 23 1 8 CW FM LIST TIME ME 05 RTTY A B CARR 1 ON B N W TIMER CLK FREQ AME STEP Lock Do VFO A B PRE ATTN AGC S F A B ANT 1 2 VHF NOTCH Press the TIMER function button Press the sequence p J gt F BW MODE AUTO AM SYNC SCAN x 6 0 4 0 LSB USB MEM SEEK m 231 8 CW FM MEM Ef I LIST TIME TUNE O L ET 05 RTTY A B CARR 1 OFF VFO A B PRE ATTN AGC S
14. SEEK 2 3 1 8 CW FM LIST TIME HEHH 05 RTTY A B CARR 20N VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 2 VHF NOTCH NAME STEP LOCK MEM Press the sequence m l Jp gt F BW MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK 231 8 CW FM LIST TIME qe Ef HE 05 RTTY A B CARR 20N VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ant 2 2 VHF NOTCH NAME STEP LOCK Press the TIMER function button E BW MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK MEM F F FT 2 3 1 8 CW FM LIST TIME TUNE H 05 RTTY A B CARR 2 OFF VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 1 2 VHF NOTCH ame step L mem MEM Pressthe button sequence P Ely F BW MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK 23 1 8 CW FM LIST TIME Lesa 05 RTTY A B CARR 2 OFF VFO A B PRE ATTN AGC s F NB NW TIMER CLK FREQ A B ANT 1 2 VHF NAME STEP LOCK Press the TIMER function button for nomal frequency display Clock and Timer Functions continued 25 TIMER CONNECTOR INTERFACE A standard 5pin DIN connectorlocated onthe rearpanel provides the connections for unattended programmed Timercontrol of cassette recorders RTTY or FAX demodu lators etc Please refer to Figure 15 for a pin by pin description of this connector BATTERY POWERED REC ORDER R8B UNE AUDIO
15. USE PINS 2 amp 5 TO CONTROLMOTOR FIGURE 16 26 Special Use Features and Functions Thisreceiverhasseveral special featuresthatare refered to inthe main body ofthisownersmanualbutmay require additional explanation FUNCTION LINE INVERT As described on page 8 of this manual the six function buttons located below the display area of the receiver activate a primary or secondary function if the F annunciatorisdisplayed ornot The usercan define either of two function linesasprimary functions To continuously access the altemate function line without incurring the time out action Press the f button and hold for 3 seconds until a confirmation beep is heard The F annunciator will remain lit indicating that the altemate function line isnow continuously active x To summarize pressing the button allowsaccessto the altemate function line forthe shortduration Altemate function availability timesoutafteranyfrontpanelinac tivity Pressing the buttonand holding itfor3seconds actsasa Shift Lock on the function lines SETTING POWER OFF ON LAMP BRIGHTNESS To set the brightness of the display when the power is tumed off press the button followed bythe button until the desired brightness is selected Continue to hold down the button and tum power off This action will store the Off state brightness Tum poweron and press the button sequence F el
16. VFO s has been setto the same frequency asthe other Thisfunction serves aS a temporary scratchpad memory of the first VFO frequency asthe second VFO frequency ischanged by tuning 8 PREamp ATIENuator A box appearsaround the appropnate legend when the Preamp or attenuator is activated 9 ANTenna 1 2 VHF A box appears around the selected antenna input ANT 1 ANT 2 or the VHF CONV connectorat the rear panel of the receiver NOTE VHF is only accessible when the accessory VHF Converter module is installed Front Panel Display continued 9 10 AGC S F Abox _ appears around the selected AGC setting With no boxilluminated the AGC isOff As the receiverisfactory supplied two choicesare possible SorF Select eitherthe Slow orFastAGC setting formost allmodesof operation However to add the Off condi tion asa third selection Pressand hold the AGC function line button forthree seconds The choicesforAGC setting will now be among three possible conditions s F orno boxdisplayed AGC Off AGC isnot displayed when the FM mode isselected 11 NOTCH A box appearsaround thisannunciator to indicate that the variable frequency audio notch control is active 12 Noise Blanker Namow Wide A box appears around the selected noise blanking range eitherNarow or Wide No box indicates that the noise blanker is not activated 13 N
17. allows more rapid automatic receiver gain adjustment to fast changing signal levelssuch as AM signals The usercan select an off position if desired To select this feature press and hold the AGC function button until a memory confirmation beep is heard The AGC button will now permit SLOW FASTor OFF settings The OFF condition isindicated by the display not showing a around SorF To remove the OFF selection option repeatthe press and hold sequence Ifthe AGC istumed off the receivergain must be manually set by using the RF gain control knob to produce distortion free reception HOW AGC RF GAIN AND THE SIGNAL METER WORK TO GETHER The AGC function button RF Gain control knob and the SIG NAL METER work together in the same circuit in three basic ways 1 Fully Automatic Gain Control Selecting either the SLOW or AST AGC setting and full clockwise RF Gain setting makesthe gain amplification control fully automatic No other gain adjustments are required Using the AGC isthe most convenient way to operate the receiverand isrecommended foralmost all receiving conditions The SignalMeterneedle automatically fluc tua teswith the strength ofthe signalreceived A weaksignalisindicated by the signal meter needle moving to the left forexample 3 A strong signalisindicated by the signal meterneedle moving to the right forexample 40 2 Manual Gain Control With AGC On Slow or Fast The maximum gain level can
18. around the unit Do not coverany ventilation slotsin top coveroroverheating may result The ventilation slots also double asa speaker grill and any blockage may resultin poorsound quality Foradded operating conven ience the front bail may be flipped down to elevate the front of the unit Referto Figure 2 Side View of Receiver FIGURE 2 ADJUSTING FRONT BAIL FIXED INSTALLATION Afterunpacking the unitand checking the voltage select switch for proper setting and correct fusing connect antenna system to the appropriate antenna input Con nectAC cord to mainsvoltage Connect ground system to ground screw on rear panel of radio Connect any otherextemalequipmentatthistime Referto Figure 3 for the diagram ofa typical fixed installation MOBILE INSTALLATION Foruse ina mobile environment the receiver includesa fused extemal DC input connector This connector is located on the rearpanel The receiverworkswell witha DC input voltage of 11 16 VDC Typical automotive systems supply 13 8 VDC Due to the relatively low current draw the receiver may be powered from the vehicle s cigarette lightersocket ConnectDC powercord observ ing the corectpolanity An intemal protection device will protect the receiver from reverse polarity hookup Con nect the mobile antenna s to appropriate antenna input s This will typically be a whip antenna with a coaxial cable thus permitting the cable to be run under floor mats etc Connect a grounding wire
19. clock position This control is not active in FM mode 9 SQUELCH Thiscontrol setsthe signal level at which the audio is muted For normal operation this control is set fully counterclockwise 10 TUNING VFO The tuning wheel and the and buttons are the primary tuning controls of the re ceiver Clockwise rotation of the tuning wheel increases frequency and counterclockwise rotation decreases fre quency The tuning wheel also incorporates variable speed tuning The fasterthe tuning wheel is rotated the faster the tuning speed TUNING WHEEL STEPS The receivercan be programmed to tune in three different resolutions steps with the corresponding display readout The three choicesare as follows A 1 kHz display readout tuning in 1 kHz steps Used for fairly rapid frequency search B 100 Hz display readout tuning in 100 Hz steps Used for tuning AM and FM signals C 10 Hz display readout tuning in 10 Hz steps Used for tuning SSB CW ordata signals Front Panel Description continued 7 The step sze may be programmed per mode The re ceiver as shipped from the factory has step sizes pro grammed asshowniin Table 1 below Tuning and Mode Display Resolution Hz LSB USB RTTY CW 10 AM FM 100 Table 1 To reset the receiver to the factory settings for STEP size AGC setting BANDWIDTH etc Pressthe POWER button to tum the receiveroff Pressthe button
20. differ ent resolutions steps with the corresponding display readout The three choicesare as follows A 1 kHz display readout tuning in 1 kHz steps Used for fairy rapid frequency search B 100 Hz display readout tuning in 100 Hz steps Used fortuning AM and FM signals C 10 Hz display readout tuning in 10 Hz steps Used for tuning SSB CW ordata signals The step size may be programmed per mode The re ceiver as shipped from the factory has step sizes pro grammed asshown in Table 2 below Tuning and Mode Display Resolution Hz LSB USB RTTY CW 10 AM FM 100 Table 2 To change the step pressthe button followed bythe STEP function line button To reset the receiver to the factory settings for STEP size AGC setting BANDWIDTH etc Pressthe POWER button to tum the receiveroff Pressthe button and hold while pressing the POWER button to tum Poweron Afterthree seconds the rec eiverwill reset The tuning wheel incorporates variable rate tuning The faster the tuning wheel is rotated the greater the fre quency change pertuning wheel revolution ws BUTTON STEPS The button increases and the button de creases the frequency by fixed steps with each depres sion asprogrammed Pressing and holding either button will allow continuous stepping up ordown aslong asthe button isdepressed The fixed stepsare as fol
21. distortion and maintain a nearly con stant audio volume level overwide variationsin received signal strength 4 Attenuation Loss asapplied in the text of thismanual added priorto the input stagesof the receiverto reduce the level of very strong signalsthat may occuron certain bands incertain locations atc ertain timesora combina tion ofallthree factors Each 10dB decibel step reduces the power of the received signal by a factor of ten 5 CW Continuous Wave transmission signals Actually the signal is keyed on and off at precise intervals to convey information Morse code isthe mosttcommonCW signal DC Input Direct Current power source such as is available from batteries or regulated power supplies Lead acid storage batteries such as employed in cars and boats have a 12 14 volt DC output which is the proper operating voltage for the receivers DC input Anotherrequirementofthe batteryisitsAMP HRrating To determine the number of hours of operation before bat tery recharging is required divide the AMP HR rating of the battery by 2 AMPS the curent requirement of the receiver 7 Dynamic Range Ability of the receiver to faithfully reproduce high quality audio overa wide range of Signal strength conditions from very weaksignalsto very strong sig nals 8 Frequency Rate of reoccunence in hertz or cycles second of electromagnetic wave or carrier 9 FM Frequency Modulated signals in which the infor mation o
22. enhanced reception by eliminating or reducing distortion due to fading signals and allowing the passband to be shifted toward one sideband to reject interference without causing audio distortion PASSBAND OFFSET 77D SQUELCH VOL 4 RF A PASSBAND OFFSET control also aids in reducing or eliminating interfering signalsby electronic ally shifting the receiver s IF frequencies without disturbing the operating frequency This action allows the operator to electroni cally move interfering signals out of the receivers pas band thusutilizing the high degree of selectivity provided by the High Q 8 pole IF filter Other built in reception aids include selectable AGC speed dualantenna inputs noise blanker NB RFpream plifierforenhancing weaksignals RFattenuatorforfurther improvement of strong signal handling capabilities ad justable RF gain NOTCH TONE and SQUELCH controls Two independent real time clocks provide a local and altemative time selection Also provided isa two event timer A programmable memoryarea allowsfor1000independ ent receive memories In addition these memories are stored in a battery backed up memory chip to ensure memory retention during powerline failure Any of these memories may be altered by the operatorand re stored These memory channels may be accessed manually or by variousscanning methods Finally a built in RS 232 compatible interface allowscom plete digitalcontrolofthe receiverinc
23. from the grounding screw on the rearpanelto the vehicle schas sis To further reduce current draw from the vehicle s battery system it isrecommended the LCD backlighting be tumed off for extended listening periods ANTENNA REQUIREMENTS The rec eiverincorporates intemal switching to allow two separate antenna systems to be connected simulta neousy Refer to Figure 3 Ant 1 isa 50 Ohm SO 239 coaxial input requiring a mating PL 259 connector This input would typically be used as the primary antenna input Antennas such as dipoles trapped dipoles verti calsand beams will provide the best results Ant 2 isa compressionterminaltype connection providing a choice ofhigh impedance 5000hms typical orlow impedance 50Ohms typical Antennassuchaslong wiresorend fed Zeppswill provide the best results The best antenna will depend on the frequency range and time of day forthe particularsignalin question Referto publicationssuchas the ARRL Handbook orARRLAntenna Manual available in most public libraries forhelp on selection and orcon struc tion of the antennas mentioned above Installation continued 5 FOR USE WITH DIPOLE LONGWIRE ATTENTION LOCATE ANY OPTIONAL VHF LOW IMPEDANCE HIGH IMPEDANCE RECEIVER ANTENNAS SOME CONVERTER DISTANCE AWAY FROM TRANSMITTER ANTENNAS TO OR AVOID POSSIBLE DAMAGE TO THE RECEIVER 50 OHM COAXIAL CABLE
24. information e Use jumper wire not smaller than No 6 AWG 13 3mm copper or equivalent when a separate antenna grounding electrode is used INSTALL WIRING ACCORDING TO THE CANADIAN ELECTRICAL CODE EFFECTUER LE CABLAGE CONFORMEMENT AU CODE CANADIEN DE L ELECTRICITE EXAMPLE OF ANTENNA GROUNDING ELECTRIC SERVICE EQUIPMENT NEC NATIONAL ELECTRIC CODE ANTENNA LEAD IN WIRE ANTENNA DISCHARGE UNIT NEC SECTION 810 20 J GROUNDING CONDUCTORS NEC SECTION 810 21 j GROUND CLAMPS POWER SERVICE GROUNDING ELECTRODE SYSTEM NEC ART 250 PART H Table of Contents iii Thank you for purchasing a Drake R8B Communications Please carefully read the Owners Manual in orderto Receiver This receiver has been designed and manu take advantage of the many interesting features that factured to high quality standards and will provide will provide enjoyable listening to radio broadcasts reliable operation for many years around the word Important Safeguards i Memory Functions 17 Memory Channel Programming 18 Table of Contents iti Recalling A Memory Channel 18 Deleting A Memory Channel 18 Introduction 1 Erase AllMemory Channels 18 Locking A Memory Channel 18 General Description 1 Scan Functions 19 Specifications Accessories 2 Scan Memory 19 Scan Memory List Block 20 Safety Voltage Selection 3 Locking A Memory Channel 20 ScanA B 21 Installation 4 Important Notes About Scanning 21 Unpacking Location Cloc
25. receive warranty service Typically a copy of the invoice from an R L DRAKE dealer will suffice The waranty is forthe original owner only and isnot transferable Warranty 37 One Year Limited Warranty R L DRAKE COMPANY warrants to the original purchaser this product shall be free from defects in material or workmanship for one 1 year from the date of original purchase During the warranty period the R L DRAKE COMPANY or an authorized Drake service facility will provide free of charge both parts and labor necessary to correct defects in material and workmanship At its option R L DRAKE COMPANY may replace a defective unit To obtain such warranty service the original purchaser must 1 Complete and send in the Warranty Registration Card within 10 days of purchase 2 Notify the R L DRAKE COMPANY or the nearest authorized service facility as soon as possible after discovery of a possible defect of a the model and serial number b the identity of the seller and the approximate date of purchase and c A detailed description of the problem including details on the electrical connection to associated equipment and the list of such equipment 3 Deliver the product to the R L DRAKE COMPANY or the nearest authorized service facility or ship the same in its original container or equivalent fully insured and shipping charges prepaid Correct maintenance repair and use are important to obtain proper performance from thi
26. strong AM signalistuned in and the NOISE BLANKER is engaged blanking can occuron modulation peaks causing a popping orbreaking up of the audio If thisisnoticed be sure the NOISE BLANKER is off For general tuning in CWmode the 1 8 kHz bandwidth is recommended since the 0 5 kHz bandwidth is very nar row When the desired signal is found tune the receiver until an approximately 800 Hz audio note is heard then select the 0 5 kHz filter If interference is present the passband offsetcanbe employed to reduce oreliminate the interfering signal RITY OPERATION In RIY mode the receiver selects the user programmed bandwidth 1 8 kHz recommended filter and positions it forthe 2125 Hzmark and 2975 Hzspace high tone group When receiving other shifts such as 425 Hz or 170 Hz the PASSBAND OFFSET may need to be adjusted to passboth tones equally Additionally the selected IF bandwidth should notbe smallerthan the shift of the received signal Therefore the 0 5 kHz bandwidth filter can not be used when receiving a 850 Hz shift RTIY signal but could be selected fora 425 Hz or 170 Hz shift RTTIY signal SSB OPERATION Tuning ina single sideband SSB sgnalcanbe somewhat frustrating forthe first time listener With the AUTO band width selected in either of the receiver s SSB modes LSB lower sideband or USB upper sideband the receiver will select the 2 3 kHz bandwidth 10 Hz tuning steps and Slow AGC setting If the default AUTO sett
27. this interfering signal by electronically shifting the receiver SIF passband Refer to FIGURE 9 This shifting of the IF passband also altersthe audio quality Forexample ifyou are receiving a signal in USB and rotate the PASSBAND OFFSET control the audio will become low pitched Conversely ifthe control isrotated to the position the audio will become high pitched The results are reversed in LSB rotated the audio becomes low pitched rotated the audio becomes high pitched In AM the PASSBAND OFFSET can enhance audio quality For example with the PASSBAND OFFSET control at the nomal 12 o clock position and the 6 kHzIF filterselected the maximum audio response will begin to roll off at 3 kHz If the PASSBAND OFFSET control is moved to one side or the other audio response exceeding 5 kHzis obtainable thusenhancing fidelity Try both offset direc tionsto deter mine which side of the signal is least subject to any possible adjacent signal interference The PASSBAND OFFSET controlisalso coupled to the synchronousdetec tor SYNC HRO allowing the passband to be altered while the detectoris in use Desired PASSBAND OFFSET Signal CENTERED Undesired Desired PASSBAND OFFSET Signal Signal Desired Undesired Signal Signal PASSBAND OFFSET FIGURE 9 PASSBAND OFFSET Operation NOTCH OPERATION Audio notch will nullify signals from 500 Hz at the counter clockwise setting of the control to 5kHz at
28. 0 4 0 LSB USB MEM SEEK ae 2 3 1 8 CW FM LIST TIME a OO 0 5 RTTY A B CARR 1 VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT 1 2 VHF NOTCH NAME STEP LOCK After 3 seconds the display reverts to the frequency readout With frequency displayed Press followed with the button sequence gt 0 LIST BEEP Pressthe timerfunction button followed within 2 seconds by depression s of the 7 button until the 2 is displayed with MEM 029 indicated Even if the 2is already dis played the timerisnot enabled unlessthe to 2 transition occurs BW MODE AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK 2 3 1 8 CW FM LIST TIME moe 05 RTTY A B CARR 12 VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANT1 2 VHF NOTCH NAME STEP LOCK After 3 seconds the display reverts to the frequency readout To set a timer without recalling a specific memory channel exit the memory mode before enabling the timer In this case the receiver maintains its current settings Referto ENABLING DISABLING TIMER OPERA TION to enable ordisable either of the two timers Clock and Timer Functions continued 3 Example for Setting Overlapping Events With frequency displayed suppose it is desired to record a one hour program on one frequency with a beginning time of 16 59
29. 3 ANT2 Thisconnectorcan be used to attach eithera low impedance 50 OHMS nominal orhigh impedance 500 Ohm nominal antenna The center clip is ground and itsconnection should be asshort as possible 4 EXT11 16 VDC IN Thisconnectoris used for powering the receiver from an extemal DC source such asa car battery Observe proper polarity when attaching wires This connectoris intemally protected from reverse polar ity 5 DC Fuse This isa 2 ampere type Tfuse Replace with same type and rating 6 AC LINE Voltage Selector This switch is used to select the properline voltage setting foryourpartic ulararea BE CERTAIN OF THEOPERATING VOLTAG EBEFO REC ONNECT ING THIS RECEIVER TO THE MAINS SOURCE Also the propermainsfuse and line cord may need to be installed See items 7 and 8 7 Fuse Check for properfusing priorto connecting this receiverto the mainssource see page 4 Fuse issx20mm SLO BLO T400 mA for nominal 115 127 VAC operation T200 mA 250V fornominal 220 240 VAC operation 8 PowerLine Cord Receptacle Thisreceptacle accepts a three wire powercable When the cable isconnected to an appropriate power line outlet the instrument is grounded This unit is shipped with a cord intended fornominal 115 127 VAC mains supply For operation of this unit on nominal 220 240 VAC mainssupply use the propercable assembly approved by your local codes 9 GND Ground The earth ground wire connected here should be assh
30. 8 GENERAL OPERATING INFORMATION This receiveriseasy to use Please take a few momentsto read through this section and familarize yourself with general operating information MICROPROCESSOR RESET A power up reset is activated each time the unit is connected to an AC or DC power source This may be confirmed by the front panel display illuminating all annunciatorsfor3 seconds followed by the clockdisplay If for any reason the receiver display or operation becomesconfused ora PWRFAIL message isdisplayed unplug the receiver from the power source and reconnect Normal operationsof the receiverare halted in the PWRFAIL mode Note Any programmed memory locationswill NOTbe lostundera power up reset orunder a PWRFAIL mode due to the memory design of the receiver BEEP TONES The receiver responds to all button depressions with an audible beep They are as follows 1 short tone forany button depression 1 long high tone when programming in memory mode 1 long low tone for any illegal button depression GETTING STARTED 1 Please referto FIGURE 8 and adjust controlsas shown 2 Press the power button 3 Press VFO button to select VFO A 4 Press F button followed by the ANTbutton to select desired antenna input 5 Press one of the MODE buttons to select the desired mode of reception Press the AUTO bandwidth button forautomatic bandwidth selection with mode change or pressone ofthe BANDWIDTH buttonsto selec
31. AME Whenever a box appears around this annunciator the receiver will display channel names if the tuned frequency is within 1kHz of a stored memory channel frequency with a name assigned Itisimportant to note that if a name is not assigned to a memory channel only the frequency will be displayed for that channel when it is recalled even though is illumi nated When the frequency first enters the 1kHz window the name willbe displayed It will remain until the frequency istuned out of the window If tuning isstopped inside the window such as when the listener is interested in the signal name display is reversed when tuning resumes the name will be replaced bythe frequency to allow fine tuning of the tuned signal The frequency will remain on the display until tuning is stopped for 2 seconds then the name will retum If while fine tuning the frequency goes outside the win dow the display willrevertto the originalna me and willbe displayed assoon asthe frequency enters the window 14 TIMER The number 1 or 2 will light to indicate which timer is selected If one or both timers Timer 1 and or Timer2 is are enabled the Land or2annunciator s will continue to be displayed afterthe receiver istumed off The ON and OFF annunciators are displayed to indicate which respective time isbeing programmed 15 STEP When selected permitssetting of three different step sizesand corresponding display resolutions Referto FRE
32. II 0 OFF OFF OFF OFF 1 5 KHz B OFF NO K 0 1 OFF OFF 1 1 8 NO M 1 2 OFF FAST OFF ON 1 A 2 3 YES K 2 3 OFF SLOW OFF ON 4 0 Y YES M 3 4 NARROW OFF ATIEN OFF CONV SEE 6 0 ON NO K 4 5 ATIEN OFF CONV TABLE NO M 5 6 NARROW FAST ATIEN ON CONV 7 YES K 6 7 NARROW SLOW ATEN ON i Y YES M 7 8 PREAMP OFF 2 0 5 A OFF NO K 8 9 PREAMP OFF 2 1 8 NO M 9 PREAMP ON 2 2 3 YES K PREAMP ON p 4 0 hA YES M lt WIDE OFF Yv 6 0 ON NO K lt NO M gt WIDE FAST YES K gt WIDE SLOW Y Y YES M EXAMPLE You type RM ENTER and the radio response on your screen is Table 7 302 lt 8 FROM TABLE FOURTH CHARACTER THIRD 0 1 2 3 OR4 8 9 OR lt VFO isA SYNCRO DET is OFF radio isnot CHARACTER 0 4 OR8 LSB USB DWS TE aussi 1 5 OR9 RTTY CW selected is6 z 2 6 OR FM AM ANTENNA selected isANT1 RF is OFF NOTCH is OFF NOISE BLANKER is OFF AGC setting is SLOW lt 2 AM Mode is AM And using characters 3 amp 4 from Table 7 1 AC Input Altemating Curent powersource available at wall outlet sockets 2 AM Amplitude Modulated signals in which the infor mation or intelligence being transmitted changes the instantaneous amplitude of the transmitted camer Not to be confused with the AM Broadcast Band fre quencies of 540 to 1610 kHz 3 AGC Automatic Gain Control which is employed in receivers to adjust the amount of gain in the receiver s circuitry to prevent
33. N OFF TIMER CLK FREQ BANDWIDTH PASSEAND 7 SQUELCH VOL RF FIGURE 4 FRONT PANEL 1 SIGNAL This meter indic atesthe relative signal level in Sunitsand dB above S9 2 Display The backlit liquid crystal display providesthe current status of the receiver such as frequency mode bandwidth etc Refer to the FRONT PANEL DISPLAY section of this manual fora full description 3 Function Buttons These 6 buttonscontrol the various functions of the receiver which are indicated on the display directly above each button 4 MODE BANDWIDTH Buttons The operating mode and bandwidth are directly entered with these front panel buttons Press the AUTO button to permit automatic setting of bandwidth asmode isselected Pressthe AM SYNC button to enable the synchronous detector in AM mode Press the button to tum the synchronous detector off before selecting LSB or USB modes 5 POWER This button tums the receiver on oroff When unit is off the clock will be displayed VOLUME This control adjusts the receivers audio speakerlevel Tum clockwise to increase levelorcounter clockwise to decrease level 7 RF This control adjusts the gain of the receiver and is nomally left in the fully clockwise position for maximum gain 8 PASSBAND OFFSET Thisc ontrolaltersthe position ofthe receiver sIF passband without disturbing the main tuning Normally thisc ontrol should be setatthe 0 or120
34. Note This equipment has been tested and found to complywith the limitsfora ClassBdigitaldevice pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interfer ence ina residential installation This equipment gener ates usesand can radiate radio frequency energy and if not installed and used in accordance with the instruc tions may cause ha mful interference to radio communi cations However there is no guarantee that interfer ence will not occur in a particular installation If this equipment does cause hammful interference to radio or television reception which canbe determined by tuming the equipment off and on the user is encouraged to try to comect the interference by one ormore of the follow ing measures Reonent orrelocate the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV techni cian forhelp 28 RS 232C Interface continued Index to Commands listed by function group then in alphabetical order of function 1 Basic Radio Contols COMMAND GROUP AGC Setting Fast Slow Off Antenna selection 1 2 VHF Converter Bandwidth selection 0 5 1 8 2 3 4 0 6 0 kHz AF AS AO Al A2 AC Wo W1 W2 W4 W6 CRAND LF CRAND LF CRAND LF Frequency
35. OTH function button use NOTCH control to adjust for desired results Press f 3 press SIEP function button Frequency display will adjust accordingly Press F 3 pressLOCKfunction button Must be in VFO mode Pushbuttons and tuning wheel are inactive Press f 3 pres ex hold until colon flashes Use keypad to enter eitherL local or U altemate time in HH MM SSformat Press to start clock Press f 3 press lt press again within 3 secondsto display altemate time Press CLK FREQ function button to display current selected time 34 Dim Lamp 7 26 Disable Beep 7 Quick Reference Guide Press F Press F 3 press 3 press to enable ordisable beep uw Press until dial lighting is at desired level MEMORY FUNCTIONS Program Memory Channel page 18 Recall Memory Channel page 18 Recall Memory Tune Channel page 18 Move Memory to VFO page 18 Lock Memory Channel page 18 Delete Memory Channel page 18 Select VFO amp mode adjust frequency amp bandwidth Press p gt location for NAME Press backspace Press Press m MEM will flash 3 use keypad to enter 3 digit memory channel number Use the Tuning Wheel to entercharacterat each A Ra to advance cursorand press
36. QUENCY STEP SELECTION on page 12 16 CLOCK FREQUENCY Either the Time or Frequency can be displayed by pressing the function button below this annunciator 17 LOCK A box appearsaround this annunciator to indicate that all front panel buttonsand Tuning wheel entries are locked out O Rear Panel Description 1 2 3 4 5 6 7 8 CONV ANTI J k DISCONNECT FROM ab 4OWATTS 50 60 Hz Teen aaa 2 E S5 gt TYPE T Zl EXT 11 16 VDC IN 50A 50A TIMER EXT OUT OUT Q VIY T00VAC 400 mA 120VAC 400 mA BOTH 4 200VAC 200 mA 240VAC 200 mA MADE IN U S A A FN INTERFACE DRAKE RISK OF DEKA SHOCK DO NOT O EN eges a E CAUTION Risk oF FIRE AVIS RISQUE DE CHOC Rs 2826 DISCONNECTING UNIT FROM AC LINE ELECTRIQUE NE PAS QUVRIR ATTENTION risque p INcENDIE REMPLACEZ FUSIBLE DU TYPE INDIQUE APRES DEBRANCHER DU SECTEUR 15 14 13 12 11 10 9 FIGURE 6 REAR PANEL 1 CONV This connector is the antenna input to the optional VHF Converter Attach a 50 OHMS nominal impedance coaxial feed line from the antenna This connectoracceptsa standard PL 259 plug 2 ANT1 Thisconnectorisused when attaching receiving antennas with coaxial feed lines of 50 OHMS nominal impedance Acceptsa standard PL 259 plug
37. R8B Communications Receiver Owner s Manual is a registered trademark of the R L Drake Company DRAKE Copyright 1997 R L Drake Company P N 3851305A 9 1997 Printed in the U S A L EN 55011 X EN 55013 L EN 55014 L EN 55015 L EN 55020 EN 55022 i DIN V VDE 0855 part 10 part 12 k OOO CE marking Declaration of Conformity We Manufacturer Importer Full address R L Drake Company 230 Industrial Drive Franklin Ohio 45005 United States of America declare that the product Description of the apparatus system installation to which it refers R8B Communications Receiver 1294 is in conformity with reference to the specifications under which conformity is declared in accordance with 89 336 EEC EMC Directive Limits and methods of measurement EN 61000 3 2 Disturbances in supply systems caused of radio disturbance characteristics of by household appliances and similar industrial scientific and medical ISM electrical equipment Harmonics high frequency equipment EN 61000 3 3 Disturbances in supply systems caused Limits and methods of measurement by household appliances and similar of radio disturbance characteristics of electrical equipment Voltage fluctuations broadcast receivers and associated equipment C EN 50081 1 Generic emission standard Limits and methods of measurement EN 50082 1 Generic immunity standard of radio disturbance characteristics of househ
38. RISE DE COURANT OU UNE AUTRE SORTIE DE COUR ANT SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT 1 Read Instructions All the safety and operating instructions should be read before the appliance is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the appliance should be adhered to 4 Follow Instructions All operating and use instructions should be followed 5 Cleaning Unplug this appliance from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleansers Use a damp cloth for cleaning 6 Do Not Use Attachments not recommended by the manufacturer or they may cause hazards 7 Water and Moisture Do not use this product near water for example near a bathtub wash bowl kitchen sink laundry tub in a wet basement or near a swimming pool and the like 8 Accessories Do not place this product on an unstable cart stand tripod bracket or table The product may fall causing serious injury to a child or adult and serious damage to the appliance 9 Ventilation This product should never be placed near or over a radiator or heat register This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer s instructions have been adhered to Any slots or openings in the cabinet are pr
39. Report Entry Timer Time Report Entry TLO hhmm Timer 1 on time entry TLF hhmm Timer 1 off time entry T20 hhmm Timer 2 on time entry T2F hhmm Timer 2 off time entry TU hhmmss 11 2 0 Filhhmm CRAND LF CRAND LF TR LF 6 Miscellaneous Lock Front Panel Load Defaults Set AM BCB Step size 9 kHz 10 kHz CRAND LF CRAND LF CRAND LF Select MHz kHz Select Frequency Display Mode Select Time Display Mode Select Display Brightness CRAND LF CRAND LF CRAND LF CRAND LF Enter key eae Enter ke l Enter ke NOTES 1 Allcommandsteminated by camage retum CR except U and D Commands Cx and Pxoooooo require an optional Cariage Retum as follows If Cx isfollowed by a Camage Retum response is immediate If Cx is entered response is immediate but note that no Carriage Retum was required in this case 2 These commands may be used during scanning Others are locked out 3 A null entry ca mage retum by itself results in a LF response Invalid commands result in a Not recognized response Transfers to and froma PC to an R8B can be made using a terminal program capable of Raw ASCII data transfer such as PROCOMM PLUS 2 0 forDOS A Raw ASCII transfer does not modify the data during the transfer in any way PROCOMM PLUS The following example explains how to accomplish a file transferto and from an R8B using Procomm Plus Versi
40. TO UNE AUDIO IN OUT Car WARNING DO NOT USE TIMER CONNECTIONS TO SWITCH STANDARD 120 VAC LINE OPERATED EQUIPMENTDIRECTLY MAXIMUM RATINGS OF TIMER CONNECTIONS ARE 30 VDC AT1 AM PERE IF IT IS NECESSARY TO SWTCH THE 120 VAC LINE UNDER TIMER CONTROL ITWILL REQUIRE THE ADDITION OF AN EXTERNAL RELAY WTH THE PROPER C ONTACT RATING THATIS DRIVEN FROM THE REC EIVER s TIMER CONNECTOR Rear Panel View Normally Closed No Timer Off 3 Connection O Sg 5 4 O 2 Nomally Open i Timer On Common Figure 15 Timer Connections Contacts shown with TIMER OFF Pin 1 No Connection Pin 2 Timer Relay Common Connection Thisconnection switchesbetween Pins3 and 5 depending on the state of Timer1 or 2 Pin 3 Timer Relay Normally Closed Connection Connected to relay Common when Timer lor 2 is OFF Pin 4 Chassis Ground Connection Pin 5 Timer Relay Normally Open Connection Connected to relay Common when Timer Lor 2isON Asmentioned above a common usage of the intemaltimerrelay isto controla tape recorder to provide automatic unattended recordings of received programs By programming Timer1 or 2 On Off times into the receiver the re corderwillbe tumed On atthe TimerONtime record the program and then tum off at the Timer OFF time A typical connection diagram is shown in FIGURE 16 TIMER x TO PAUSE OR MOTOR CONTROLON OFF
41. TONES page 12 Press F to delete a program from a memory location See DELETING A MEMORY LOCATION page 18 4 Decimal This button is used when entering a frey uency directly with the numeric buttons Also used in conjunction with the button to provide a Clearentry function See DIRECT FREQUENCY ENTRY page 13 12 TONE This control is used to modify the tonal quality of the audio Counterclockwise rotation increases bass response Flat response occursat the 12 o clock setting 13 NOTCH This control is used to tune the notch frequency and isactive when NoTcH isdisplayed This control isnot active in FM mode 14 Headphone Thisconnectoracceptsa standard 1 4 diameter 2 circuit monaural or 3 circuit stereo phone plug Audio ismonaural in eithercase Allspeaker outputsare automatically switched off when using head phones 8 Front Panel Display 5 I 3 F MHz wW MODE 2 AUTO AM SYNC 7 kHz a ag LSB USB MEN SEEK MEM It 2 CW TH LIST TIME TUNE Et i 6 A B a N 12 ON OFF laug 16 oe east VFO A PRE ATTN AGC S u NB N W TIMER CLK FREQ 7 A B n DVH Noch 1 Ha LOCK 17 9 8 Ill 102 13 12 15 14 FIGURE 5 FRONT PANEL DISPLAY 1 7 Digit Apha Numeric Display Readout This display indicates frequency in MHz or kHz asselected of the current VFO or Memory cha
42. and hold while pressing the POWER button to tum Poweron Afterthree seconds the receiverwillreset BUTTON STEPS The button increases and the button de creases the frequency by fixed steps with each depres sion asprogrammed Pressing and holding either button will allow continuous stepping up ordown aslong asthe button is depressed The fixed stepsare as follows Frequency Range Step 100 540 kHz 5 kHz 540 1800 kHz AM mode 10 kHz 9 kHz if programmed Other modes 5 kHz 1800 30 000 kHz 5 kHz To tune in 100 kHz steps press the F button With the AS displayed pressthe x buttons asdesired to tune in 100 kHz increments Note that regardless of the button step increments the displayalwaysindicatesthe programmed tuning resolution step available by using the tuning wheelatany frequency 11 Program Buttons scan Scan Pressing this button startsa scan asdefined by the scan indicators S22 on the display LIST TIME A B CARR Please refer to the SCAN FUNCTIONS section of this manual for details mew Memory Pressing thisbutton in VFO mode switches the receiverto memory mode Please referto the MEMORY FUNCTIONS section of this manual for details vem VFO to Memory Pressing this button in VFO mode tr
43. ansfers the current status of the receiver forexample frequency mode bandwidth etc into memory Please referto the MEMORY FUNCTIONS section of thismanual for details wz MHz or KHz Frequency Readout or Memory to VFO Pressing the button followed by the m button changesthe frequency readout to MHzorkHzasdesied Pressing this button in memory mode transfers the con tents of the current memory location i e frequency mode bandwidth etc to the selected VFO Referto the MEMORY FUNCTIONS section of this manual for details x Function Pressing thisbutton accessessecondary functions printed in orange on the numeric buttons 0 9 and switchesthe function line on the display above the 6 function buttons gt to These buttons are normally used for direct numeric entriesin VFO memory clock and timermodes Each button also has a secondary function printed in Orange These secondary functions are used as follows Press F to for programming scan methods Refer to the SCAN FUNCTIONS section of this manual for details Press to accessthe clock Referto the CLOCK amp TIMER FUNCTIONS section of this manual for details Press w to adjust display and signal meter back light intensity Press to tum audible beep on oroff Refer to BEEP
44. ator Name Assignment ial MODE entree pee ies she see hse AUTO AM SYNC SCAN so 40 tss use MEM SEEK LIST TIME 3490 ta AB GARR s 12 ON OFF VFO A PRE ATTN acce F NB N W TIMER CLK FREQ As Raine w NAME STEP Lock If you do not want to store a name with this memory channel press the gt button To assign a name to thismemory channel tum the Tuning wheel slowly to select the desired character or blank LS space at each flashing digit location Press the button to scroll right Press the button to scroll left After entering all desired name information press v gt to store the information and retum the receiver to the VFO mode The stored name and assigned memory channel number will be displayed RECALLING A MEMORY CHANNEL First be sure that the receiver is in the VFO mode MEM MEM TUNE or Scan not displayed There are two basic methodsforselecting a memory channel The MEM TUNE method pemmitsfrequenc ytuning afterrecalling a memory channel by tuming the Tuning wheel Additional pro grammed memory channels are conveniently recalled gt lt by pressing the or buttonsorby directly entering the three digit memory number The MEM method does not pemmit frequency retuning but does permit conve nient selection of programmed memory channels by lt butto
45. be reduced manually as desired by using the RF control knob Tuming the RF control knob counterclockwise willreduce the gain caus ing the signal meter needle to move upscale With the gain reduced manually there will be less background noise when no signal is present but signals stronger than the Smeter setting will be received nomally 3 Manual Gain Control With AGC Off With the AGC off the RF Gain control must be rotated counterclockwise until the gain is reduced to the point where no signaldistortion occurs Thismode of operation is seldom used DRAKE 8B Communications Receiver Memory Functions 17 ay MEM Si LIST TIME A B CARR VFO a B PRE ATTN AGC S F ANT 1 2 VHF NOTCH DECIBLES SIGNAL ELELEE AITO AM SYNC kH 6 0 4 0 LSB USB NB NW 2 3 1 8 CW FM 0 5 RTTY 12 ON OFF TIMER CLK FREQ STEP LOCK PASSBAND OFFSET T N VOL RF FIGURE 12 MEMORY FUNCTIONS The receivercontains1000 programmable memorychan nels that can be used to store and recall commonly monitored frequencies These 1000 channelsare divided into blocks of 10 ie 00 09 10 19 20 29 etc This allows convenient grouping of frequencies Asan example 00 09 could be broadcast stations 10 19 could be time stations such CHU and WWV frequencies for listening at differenttimesof day etc The receiverispreprogrammed at the factory with 20 useful frequencies and cone sponding mod
46. ceive the desired station The attenuatorisavailable for use across the entire tuning range of the receiver except forthe rangescovered by the optional VHF Con verter module Another RF function available isa preamplifier PRE which provides an additional 10 dB of gain to the re ceived signal Thiscan be usefulon the highershortwave frequencieswhen trying to receive a weaksignalpermhaps atthe noise level Use caution when using the preamp as it could amplify an adjacent signal causing distortion on the desired signal The preamplifier is not selected for frequency ranges covered by the optional VHF Con verter module For general tuning operate the receiver with both the PREAMPURER and ATTENUATOR off To enable ordisable the PREAMPLIFIER or ATTENUATOR Press the function line button below the displayed PRE ATINannunciators The selected function isindicated by a displayed box around the function Conversely no box indicates that the function is not selected NOISE BLANKER The NOISE BLANKER NB providestwo settings which will reduce or eliminate much noise interference encoun tered The N orna mow setting isforshort duration high impulse noise such asautomotive ignition noise Thew or wide setting isto reduce longer duration impulses Unfortunately there existsno blankercapable ofeliminat ing all possible noise either atmospheric or man made Another side effect of the NOISE BLANKER use is on AM Signals Occasionally if a
47. cy before ww was pressed DELETING A MEMORY CHANNEL A Press w and select desired memory channel with the Le buttons or by direct entry of a three digit memory channel If recalling an unprogrammed channel with direct entry an error beep is heard and Enor is displayed B Press and hold until a short high pitched beep isheard Display willshow a new memory channel number C Press wx or VFO to retum to VFO mode M ERASE ALL MEMORY CHANNELS With poweroff Press and hold while tuming power 0 on Hold for 3 seconds until a confirmation beep is heard and the display shows a single in the Memory Number display LOCKING A MEMORY CHANNEL First be sure the receiverisin the VFO mode MEM or sc not displayed A Press w and select desired memory channel with ms the eI buttons or by direct entry of a three digit memory channel If recalling an unprogrammed chan nel with direct entry an error beep is heard and Emor is displayed B To lock memory channel Pre LOCK A confirma tion beep willbe heard and MEM will now flash To unlocka locked memory channel Press F LOCK A confirmation beep will be heard and MEM will stop fla sh ing C Press wx or VFO to retum to VFO mode M SCAN FUNCTIONS The receiver p
48. doesnot attempt to translate control characters into their respective actions Forexample some programs intended for modem communications translate a data byte received ashex 08 into the destructive backspace action Such programs usually supply option settings to select whether control charactersare translated ornot Translation of data into control actions will result in unpredictable results since some of the setting information will be lost orchanged A setting string consists of from 7 to 14 bytes formatted as follows dd nnnnnnnndd dd c c c c c c c l 1 1 where dd a hexadecimal data byte format described below nn two digits 0 9 c any ASCII character value in the R8B character set The format foreach of the bytesis byte 1dd 0 0 0 ee kHz lock 0 als 0 RS 232C Interface continued byte 6dd noise agc pre atten notch 0 blanker amp byte 7 dd antenna mode bandwidth bytes 8 14 These bytes are optional and contain the name for the accompanying data Thisis intended for use with high speed memory store and recall functions Namescan be lessthan 7 characters without filling the string out to 7 When doing block store operations a hexadecimal 7F can be used to terminate names shorter than 7 characters eliminating the need to send unneeded bytes Forexample if the radio isdoing a block store of channels 20 through 30 and channel 21 is named NAME while 22 isunnamed the da
49. e can be used to corect typing error before hitting retum 7 Commands Intended for use in computer control use hexadecimal data 8 Causesa report from the receiver whenever any receiver setting ischanged 9 Report types may be entered in any combination for customized reports To Transfer Memory Channels from a PC file to R8B memory Type BSxxx where xxx is the lowest channel number where you want the channelsto be stored This will result in being displayed on the R8B front panel Press the Page Up button on the PC From the resulting screen select Raw ASCII From the resulting ASCII Upload dialog box type in the path and name of the file Then press Enter This will start the transfer When the file transfer is complete there can be as much as 1 5 minutes delay before disappears from the R8B front panel display 30 Setting Strings used in Quick Set Block Store and Block Read commands Some commandswork with setting strings These allow fast and direct setting orreading of certain radio information They are intended for use within a computer program only All operationsusing these can be done manually with other commands using much less cryptic formats Note that invalid settings willbe overmidden in most cases without wa ming Since these commands use hexadecimal data in the command strings it is important that the host terminal use an RS232 receiver program that
50. e extensive work by a qualified technician to restore the product to its normal operation e If the product has been dropped or the cabinet has been damaged f When the product exhibits a distinct change in performance this indicates a need for service 19 Replacement Parts When replacement parts are required be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original parts Unauthorized substitutes may result in fire electric shock or other hazards 20 Safety Check Upon completion of any service or repairs to this product ask the service technician to perform safety checks to determine that the product is in proper operating condition 21 Outdoor Antenna Grounding Before attempting to install this prod uct be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up static charges a Use No 10 AWG 5 3mm copper No 8 AWG 8 4mm aluminum No 17 AWG 1 0mm copper clad steel or bronze wire or larger as ground wire b Secure antenna lead in and ground wires to house with stand off insulators spaced from 4 feet 1 22m to 6 feet 1 83m apart c Mount antenna discharge unit as close as possible to where lead in enters house d A driven rod may be used as the grounding electrode where other types of electrode systems do not exist Refer to the National Electrical Code ANSI NFPA 70 1990for
51. e in memory channels00 19 With memory channels programmed you can use the various scan functions to automatically monitor desired memory fre quencies The following may be stored in any memory channel 1 Frequency 2 Mode Bandwidth AGC setting PRE or ATIN setting Antenna Notch ON OFF Noise blanker setting Sync hronous detector ON OFF 0 3 4 5 6 7 8 9 10 NAME PREPROGRAMMED MEMORY CHANNELS LIST MEMORY CHANNEL FREQUENCY NAME MODE MEM 00 530 AM BCB AM MEM 01 2300 120M AM MEM 02 3200 90M AM MEM 03 3900 75M AM MEM 04 4750 60M AM MEM 05 5800 49M AM MEM 06 7100 41M AM MEM 07 9500 31M AM MEM 08 11600 25M AM MEM 09 13570 22M AM MEM 10 15100 19M AM MEM 11 17480 16M AM MEM 12 21450 13M AM MEM 13 25600 11M AM MEM 14 5000 WWV AM MEM 15 10000 WWV AM MEM 16 15000 WWV AM MEM 17 20000 WWV AM MEM 18 7335 CHU AM MEM 19 14670 CHU AM All above are stored as VFO A ANT 1 PREAMPLIRER Off AGC Sand BWas selected by the particular mode 18 Memory Functions continued MEMORY CHANNEL PROGRAMMING First be sure the receiverisin the VFO mode MEM MEM TUNE or S not displayed A Select the desired frequency mode bandwidth etc B Press gt and within three seconds entera three digit number from 000 to 999 A confirmation beep is heard C Receiverwillswitchto NAMEmode The receiverisnow ready to accepta 7 digitname forthispartic ularmemory channelasindicated by the blinking NAME annunci
52. enabled A Timer not properly set B Altemate clock selected A Altemate button functionsenabled i e f isdisplayed Troubleshooting 35 Corrective Action A Check power supply cables B Check fuse C Contact service A Unplug from power s source and re connectto reset microprocessor A Tum squelch counterc loc kwise B Select correct antenna input C Tum off RF ATIN D Tum RF gain clockwise A Tum RF gain clockwise A Check mode selection B Check extemal speaker switch on rearpanel A Center PASSBAND OFFSET control A Press F LOCK to unlock front panel A Program timer ON OFF times A Press f for confirmation beep and F annunciatornot displayed Special Display Messages PWRLO S or PWRLO S powerlost indicatesthat power has been disrupted to the receiverand the clockshave lost their time settings There is no problem with the receiver and itmaybe operated asnomal To extinguish this message simply reset the clocks PWRFAIL Power Fail indicates that the power supplied to the receiverdoesnotmeetthe spec ified requirements This could be caused by an impropenly selected AC line voltage low AC line voltage brown out or low DC voltage Normal operations of the receiverare halted in the PWRFAIL mode To retum to nomal operation disconnect the receiver from the power source Make sure the proper AC Voltage range is selected f
53. entry Mode selection M1 USB with SYNC on M1 AM SYNC USB M2 1SB with SYNC on M2 AM SYNC LSB M3 RTIY M4 CW M5 FM M6 AM with SYNC on M6 AM SYNC Noise blanker setting O ff Narrow Wide F nnn nnnnn F nnnnn nn or F nnnnnnn M1 M2 M3 M4 M5 M6 BF BN BW CRAND LF CRAND LF CRAND LF Notch setting Off On Power On Off 5 Quick Set 7 NF NO PO PF Qddddddd CRAND LF CRAND LF CRAND LF RF gain setting Preamp Atten No Preamp orAtten Step size selection 2 STO 10 Hz steps with Scan Not active ST1 100 Hz steps ST2 1 kHz steps ST3 10 kHz steps with Scan active ST C ycles between 100 Hz 1 kHz and 5 kHz with Scan active Cycles between 10 Hz 100 Hz and 1 kHz with Scan NOTactive Synchronous detector setting 2 AM mode SYNC Off On G G G0 STO ST1 ST2 ST3 or ST SF SO CRAND LF CRAND LF CRAND LF Tune Up 2 Tune Down 2 VFO selection VFO A VFO B VFO A VFO B U D VA VB AEB NONE NONE CRAND LF CRAND LF 2 Memory Management Block Read 7 Block Store 7 Permits large transfer of information Erase All Memory Channels BR sss eee BSsss ddddddd EATY ss CRAND LF CR LF or NONE Erase Channel nnn 000 through 999 Mem Tune Control Off On Name Channel EC nnn CTF CTO NCccccccc CRAND LF CRAND LF CRAND LF Name Mode Control Active Inactive Recall Channel nnn 000 through 999 Store Program Channel nnn
54. erference If the interference is sufficiently severe to preventreception selecta narrower IF bandwidth and retune to the desired signal After reception is obtained select a wider bandwidth and or altemate sideband if desired When AM SYNC hasbeen activated moving the main tuning knob will cause the SYNC circuit to momentarily disengage indicated by SYNC flashing then back on again when tuning has stopped AM SYNC willnot operate propery on intermit tenttransmissionssuch asthose encountered on CBradio bands forexample Forthose types of transmissions use the AM mode Press the button to tum the synchro nous detector off before selecting LSB or USB modes Getting Started continued 15 PASSBAND OFFSET SQUELCH VOL s AF 0 NOTCH TONE SQUELCH PASSBAND OFFSET RF GAIN VOLUME CENTERED CENTERED COUNTER C LO C KWISE CENTERED CLOCKWISE COUNTER C LOC KWISE FIGURE 10 RF FUNCTION ATTENUATOR PREAMP CW OPERATION Occasionally a received signal may be very strong such as from a local broadcast station When this happens distortion could degrade the signal s quality To help combatthis the should be selected Itprovides 10 dB of loss to the incoming signal thereby allowing the receiverto function no mally Also when trying to listen to a weak station in the presence of an undesired stronger station selecting the attenuator will lower the received levelofboth Thisaction could make it possible however to re
55. es ENABLING DISABLING TIMER OPERATION Press the TIMER function button A l or 2 or will be displayed Aftertwo secondswith no entry the display reverts back to frequency ortime readout Timer 1 can be disabled enabled by pressing the numeric digit on the keypad while the timer enable display is showing Timer 2can be disabled enabled by pressing the numeric digit on the keypad while the timer enable display is showing Prior to enabling either or both timers consider one of two possible cases for each timer eg To Enable TIMER 1 1 isdisplayed Pressthe button to display 1 2 L is displayed Press the button twice to again display 1 Setting a for either timer DISABLES the respective timer Timers Land 2 Enabled AUTO AM SYNC F BW MODE 6 0 4 0 LSB USB SCAN MEM SEEK MEM I ET 2 3 1 8 CW FM LIST TIME TUNE G LT El 05 RTTY A B CARR 42 VFO A B PRE ATTN AGC s F NB N W TIMER CLK FREQ A B ANT 1 2 VHF NOTCH NAME STEP LOCK Timer 1 Enabled Timer 2 Disabled F Bw MODE so AUTO AM SYNC SCAN 6 0 4 0 LSB USB MEM SEEK 298 231 8 CW FM LIST TIME HERH 05 RTTY A B CARR 1 VFO A B PRE ATTN AGC S F NB N W TIMER CLK FREQ A B ANTG 2 VHF NOTCH NAME STEP LOCK If either one orboth the timer Lortimer2 are enabled the
56. etection Press the AM SYNC button to tum the synchronous detector off before selecting LSB or USB modes Press and hold TIMER function button until ON annunciatortumson and flashes Use keypad to enter On time for Timer 1 Press TIMER function button again Use keypad to enter Off time for Timer 1 Press TIMER function button again Use keypad to enter ON time for Timer 2 Press TIMER function button again Use keypad to enter Off time for Timer 2 Press TIMER function button again to exit set mode Press TIMER function button enter Land or 2 Press CLK FREQ function button to display time or frequency readout Most front panel pushbuttons perform two functions The second function requires that the f button be pressed first and then the desired 2nd function button pressed within 3 seconds The symbol 3 indicatesthat button isto be pressed within 3 seconds Set VFO A VFO B page 8 Select Antenna page 8 12 Activate NAME page 9 18 Activate Notch page 9 Adjust Step Size page 6 9 13 Lock Controls page 9 14 Set Time page 22 Display Time page 22 Press 3 press VFO function button until display shows VFO A B Press rf ANTfunction button until desired antenna is enclosed in box Note VHF is only accessible if the optional VHF converter module is installed Press F 3 press NAME function button until a box encloses NAME Press F 3 press N
57. etting is saved even if power is removed from the re ceiver To change back to 10 kHz repeat above steps Scanning Resolution Display Resolution Hz Hz Default Step 1 Step 2 Default Step 1 USB LSB CW 1K 5K 100 RTTY AM FM 10K 5K lelsewhere or 9kHz if programmed Table 5 Scan Tuning Resolution Important Notes About Scanning To avoid impaired scanning action it is recommended not to intermix HF with VHF channels which imposesrapid switching on the antenna select relay In allscanning modesthe setting of the SQUELCH control is important for proper scanning action Due to atmos pheric noises alone using a squelch control in the HF spectrumis atbest a compromise A more exactmethod of SQUELCH setting is provided here First be sure the SQUELCH control is counterclockwise Next adjust the RF gain control Sowly counterclockwise until the S METER reads the signal level desired to trip the squelch circuit Forexample ifyouwantonlysgnals lt 7 or stronger to break the SQUELCH rotate the RF GAIN control until the S METER is reading S 7 Next leaving the RF GAIN control alone advance the SQUELCH control clockwise until the receiver audio just quiets Finally advance the RF GAIN fully clockwise The receiverisnow ready foraccurate scanning 22 Clock and Timer Functions DRAKE R8B Communications Receiver MEM SEEK DECIBLES LIST TIME TUNE Jot fot Jt A B CARR SIGNAL
58. he AM broadcast band the receiver auto matically switches to a 10 kHz step size 9 kHz progra m mable within the AM broadcast band To perform an A Bscan press F Result A Bflashesand the frequency display changesto show one of the current scan frequency endpoints To change thisendpoint entera new frequency To set the second endpoint press the orj button The display now showsthe otherfrequency endpoint Entera new frequency if desired To review the endpoints press PS the or buttons Select method SEEK or MME F or CARRIER F Result SEEK TIME or CARR lights in status area Select desired mode bandwidth BW antenna etc Adjust squelch to quiet receiver audio Press sean flashes in status area when scan isactivated To adjust step rate Press F SEP and step sze will change aspertable 5 Display will indicate scanned frequency Scanning can be stopped orrestarted with repeated depressionsof the sean button When scan actionisstopped the receiverwill be in the VFO mode Scan Functions continued 21 To programa 9kHzstep rate foroverseasbroadcastband reception Press POWER to tum receiver off Hold TIMER STEP function button Press POWER to tum receiveron 9 kHz step in broadcast band is now programmed This s
59. hus quieting or muting the receiver ANTENNA RELAY CONTROL The mute line doesnot disconnectthe antenna Older Drake equipment required the mute line to be grounded for receive This receiver requires ground to mute When using the receiver with older Drake equipment an external relay is recommended to operate the mute line Sometimes this may be accomplished by using a spare set of relay contacts on the antenna switch over relay If you are not operating a linearamplifier you can use the vox relay contacts to provide control of the re ceivermuting Simply connectthe two pin jackorRCA phono socketof the AC 4 PS 75 PS 7 powersupply to the mute jack on the R8B ANTENNA RELAY gt e g DOW KEY ETC 5 4 R8B RECEIVER TRANSMITTER ANTENNA COAX ANTENNA COAX MUTE CABLE 1 q ss FIGURE 7 SUGGESTED HOOKUP FOR MUTE OPERATION IE OR 12 Getting Started DRAKE R8B Communications Receiver MEM SEEK DECIBLES LIST TIME TUNE et B B A B CARR SIGNAL ANT 2 WHF NOTCH MHz W ope AUTO AM SYNC SCAN kHz 55 49 1S8 USB VFO OR B PRE ATTN AGC S F A pa 12 ON OFF TIMER CLK FREQ LOCK PASSBAND gt SQUELCH VOL RAF NOTCH TONE SQUELCH PASSBAND OFFSET RF GAIN VOLUME CENTERED CENTERED COUNTER C LOC KWISE CENTERED CLOCKWISE COUNTER C LOC KWISE FIGURE
60. ingshave been programmed by the user then those partic ularsettingsare recalled Gen erally LSBisused below 10 MHzand USBisused above 10 MHz First be sure the PASSBAND OFFSET control is centered When initially tuning in the desired station tune slowly If the station is unintelligible try the other sideband again tuning slowly A station tuned in on the wrong sideband is totally unreadable but a station mistuned on the right sideband may sound like Donald Duck Further tuning will resultin a more nomal voice sound Once the station istuned in the PASSBAND OFFSETcan be used to alterthe audio response of the received SSB signal Refer to PASSBAND OFFSETOPERATION fordetails Additionally if adjacent stations are causing interference the 1 8 kHz bandwidth filter may be selected in conjunction with the PASSBAND OFFSETto further reduce or eliminate interfer ing signals l6 Getting Started continued DRAKE R8B Communications Receiver MHz wW MoDE AUTO AM SYNC 5 7 9 20 4060 SCAN kHz G 30 A ee Tune 4 B8 MEM SEEK DECIBLES LIST TIME A B CARR VFO A B PRE ATTN AGC S F A B ANT 1 2 VHF NoTCH SIGNAL TRY 12 ON OFF TIMER CLK FREQ STEP LOCK SIG NAL METER AGC function button and dislpay FAST SLOW and OFF PASSBAND OFFSET 77D SQUELCH VOL 4 RF RF control knob gain CLOCKWISE and COUNTERC LOC KWISE FIGURE 11 FM OPERATION Frequency modulation FM
61. itha detachable type three wire power cable intended for nominal 115 127 VAC mains supply When con nected to an appropnate power line out let thiscable groundsthe instrument cabi net For operation of this unit on nominal 220 240 VAC mains supply use the proper power cable assembly approved by your local codes Foruse of thisproduct outside the U S A or Canada on supply voltages of 220 VAC or greater the discharge resistor 4 7 Meg Ohm connected from the neutral wire ter minal of the AC input receptacle to the receiver chassis must be removed Refer modification to a qualified service technician 4 Installation UNPACKING Carefully remove the receiver from the shipping carton and examine itforevidence ofdamage If any damage is noted immediately contact the transportation com pany responsible for delivery or retum the unit to the dealerfrom whom it waspurchased Keep the shipping carton and all packing materal for the transportation company to inspect The original carton and packing maternal should be retained forrepackaging should itbe necessary to retum the unit Inspectthe packing material forany accessoriesorprinted material before storing the box Locate the registration card fill out and immedi ately retum to the R L Drake Company to insure registra tion and validation of waranty LOCATION The location of the receiver is not critical so long as adequate clearance isprovided to allow aircirculation in and
62. k and Timer Functions 22 Fixed Installation Time Display 22 Mobile Installation Setting The 24 Hour Clocks 22 Antenna Requirements Timer Operation 22 Installation Diagram 5 Setting Timer On Off Times 22 Enabling Disabling Timer Operation 23 Front Panel Description 6 Timer Connector Interface 25 Front Panel Display 8 Special Use Features and Functions 26 Function Line Invert 26 Rear Panel Description 10 Setting Power Off On Lamp Brightness 26 10 kHz 9 kHz Scan 26 Mute Operation of the Receiver 11 Delete All Memory Locations 26 Power On Button Functions 26 Getting Started 12 Held Button Functions 26 General Operating Information 12 Microprocessor Reset 12 RS232C Interface 27 Beep Tones 12 Getting Started 12 Glossary of Terms 31 Frequency Step Selection 12 Dual VFO s 13 Direct Frequency Entry 13 Suggested References 32 Front Panel Lock 14 Passband Offset Operation 14 Quick Reference Guide 33 Notch Operation 14 AM Synchrono us Detector 14 Troubleshooting 35 RF Function Attenuator Preamplifier 15 Special Diplay Messages 35 Noise Blanker 15 CW Operation 15 RTIY Operation 15 Semice SSB Operation 15 FM Operation 16 warany 2 Gain and AGC Operation 16 Waming The R8B Communications Receiver complies with FCC rule Part 15 Any changesor modifications to the receiver without expressed approval of the R L Drake Company could cause the receiverto violate the FCC Compliance tules This page left intentionally blank Introduction Gene
63. k to 10 kHz repeat the same procedure DELETE ALL MEMORY LOCATIONS If it is desired to delete ALLprogrammed memory loca tions perform the following procedure With POWER OFF Pressthe button and hold while pressing the POWER button Hold the button until a double beep is heard to indicate that ALLmemory locations have been cleared HELD BUTTON FUNCTIONS Hold the indicated button fortwo secondsto perfom the function shown Store default AGC STEP and BANDWIDTH for Auto mode Setclock Toggle between times Slow Fast and Slow Fast Off AGC operation Entera memory channel name Set timer times CARR VFO A B PRE ATTN AGC S F B ANTZ VHF NoTcj m z bn ag E m 8 Tunes frequency ormemory channel up Tunes frequency ormemory channel down Invert Toggles between the F shift MEM and MEM operation TUNE modes The receiver rear panel provides a common DB 9 con nector which conforms to the RS 232C serial data com munications standard with the receiver configured as DCE This connector may be attached to a personal computerrunning a terminal emulation program suchas PROCOMM PLUS Hyperterm operates under Windows 95 or BICOM Standard BASIC terminal programs will also permit receiver operation The interface provides complete control and program ming capability of the receiver Only the analog controls s
64. located in the vicinity of overhead power lines other electric light or power circuits where it can fall into such power lines or circuits When installing an outside antenna system extreme care should be taken to keep from touching such power lines or circuits as contact with them may be fatal ii Important Safeguards continued 15 Overloading Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock 16 Object and Liquid Entry Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock Never spill liquid of any kind on the product 17 Servicing Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards Refer all servicing to qualified service personnel 18 Damage Requiring Service Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions a When the power supply cord or plug is damaged b If liquid has been spilled or objects have fallen into the product c If the product has been exposed to rain or water d If the product does not operate normally by following the operating instructions Adjust only those controls that are covered by the operating instructions An improper adjustment may result in damage and will often requir
65. lows Frequency Range Step 100 540 kHz 5 kHz 540 1800 kHz AM mode 10 kHz 9 kHz if programmed Other modes 5 kHz 1800 30 000 kHz 5 kHz To tune in 100 kHz steps pressthe button With the a displayed pressthe x buttons asdesired to tune in 100kHzincrements Note that regardlessofthe LOS nc button step increments the display always indicatesthe programmed tuning resolution step avail able by using the tuning wheel at any frequency DUAL VFO s A VFO A VFO B Two VFOs A and B are provided on the receiver Selec tion ismade with the VFO function key Each VFO canbe set to any frequency and act asa temporary memory channel Getting Started continued 13 Forexample suppose you want WWV at 10 M Hz in VFO B while using VFO A to tune other frequencies Press VFO to selectB Press AM mode button Press w cir aur WWV is now stored in VFO B 1 0 Press VFO to select A Tune otherfrequencies with VFO A To recall WWV press VFO function button NOTE See DIREC TFREQ UENC Y EN TRY section below forexplanation of second entry B A Thisfunction isused to transferthe frequency ofthe active VFO into the inactive VFO Thisis handy if you are tuning and would like to temporarily hold a certain frequencyas you continue tuning For example suppose you are tuning in VFO Band co
66. luding memoryand scanning functions 2 Introduction Specifications Accessories Frequency Range Modes Sensitivity SSB CW 10dB SHN N Sensitivity AM 10d B SHN N 1000 Hz 30 mod Sensitivity FM 12 dB SINAD Frequency Stability Frequency Accuracy Selectivity AM LSB USB RTTY CW FM Only Ultimate Selectivity Image Rejection IF Rejection Dynamic Range 100 30 000 kHz AM LSB USB CW RTTY FM 0 5 uV nominal 100 30 000 kHz preamp off Less than 0 25uV 100 30 000 kHz preamp on 1 5 uV nominal 100 30 000 kHz preamp off Less than 1 0 uV 100 30 000 kHz preamp on Less than 0 5 uV 100 30 000 kHz 5ppm 10 to 50 C Better than 100 Hz 10 to 50 C 6 KHz 6 dB less than 12 kHz 60 dB 4 KHz 6 dB less than 8 kHz 60dB 2 3 KHz 6 dB less than 4 5 KHz 60 dB 1 8 KHz 6 dB less than 3 6 KHz 60 dB 500 Hz 6 dB lessthan 1 5 KHz 60 dB 12 KHz 6 dB less than 25 KHz 60 dB Greater than 95 dB Greater than 80 dB 100 30 000 kHz Greater than 80 dB 45 MHz Greater than100 dB 50 kHz 97 dB 100 30 000 kHz 100 kHz spacing IP Intercept Point preamp off 1st IF 2nd IF AGC Ant 1 Converter Ant 2 Notch Filter Attenuation Extemal Speaker Output Line Outputs AC Power Requirements DC Power Requirements Operating Temperature Weight Size 20 dBm 100 kHz spacing 20 dBm 5 kHz spacing 45 MH
67. me acrossa station at 4 5 MHz you would like to occasionally check Pres f then A Equal symbol now appears between VFO A B Continue tuning and recallstation at 4 5 MHzanytime by pressing the VFO button DIRECT FREQUENCY ENTRY Direct keyboard entry of a frequency is possible using numeric buttons 0 9 and decimal allowing forrapid frequency change Pressing the button sequence will cancel any frequency ormemory channel num ber entry in progress and retum the setting to its previous state NOTE With the optional VHFConverterinstalled entering a three digit frequency in MHz is possible after first selecting antenna Press VFO to select VFO A or VFO B TO ENTER FREQUENCY IN MHz Press F Wx to select MHz display mode if required MPV Enter frequency in MHz beginning with the most sgnifi cant digit You do not need to enter leading or trailing zeros Examples 1 1 410 MHz Press p 2 29 660 MHz Press e e x The second depression of the decimal buttonactsas an Enter and causesimmediate response to the entered digits If you forget to press the decimal button a second time the receiverwillautomaticallydo so foryou but with a slight dela
68. n AM signal FM Frequency Modulation CW Continuous Wave Morse Code RTTY Radio Teletype ordata LSB Lower Sideband USB Upper Sideband 4 The annunciators under this heading indicate the current scan function programming will light when the receiver enters the mode Refer to the Scan Functions section of this manual IMPORTANT PLEASE READ The function lines of the display described in callouts 5 through 17 are activated by the unmarked function button located directly below the displayed function The primary function line isthe top mostline Pressing the r allows access to the altemate function line lower line Altemate function availability times out afterany front panel activity which altersthe display Function 34 A Lines PRE ATTN AGC S F TIMER step ant n 2 vHF Norca NB N W NAME CLK FREQ Lock Function SCAN TUNE Buttons m jo SCAN my e een ae 4 5 6 mar LAMP BEEP VPM 7 8 9 Ale mey gt 5 This annunciator lights to indicate that the alter nate function selection is enabled 6 VFO A B Thisannunciatorindicatesthe VFO in use A box appearsaround the active VFO 7 A B An sign appearsbetween the A and B ofthe top function line to indicate that one of the
69. n Radio Relay League Library of CongressCatalog Card Number 55 8966 4 The ARRL Handbook Published by The American Radio Relay League Newington CT USA 06111 Copyright 1989 by The American Radio Relay League Library of Congress Catalog Card Number 41 3345 5 Radio Interference How to Find it and Cure it Published by The American Radio Relay League Newington CT06111 U S A Select VFO page 13 Adjust Frequency page13 Preamp orAttenuator page 15 Select AGC page 9 16 Activate Noise Blanker page 9 15 Select Bandwidth page 6 Select Mode page 6 Select Synchro page 6 14 Set TIMER On Off times page 22 23 24 Activate TIMER page 23 Select CLOCK FREQUENCY Display page 6 9 Quick Reference Guide 33 Press VFO function button until desired VFO is enclosed in box s Select VFO function button Use numeric keypad ortuning wheel Press PRE ATIN function button until a box encloses PRE OF ATTN Press AGC function button until desired AGC action is enclosed in box Press NB function button until desired noise blanker mode is displayed Press BANDWIDH buttons to select appropriate filter Press MODE buttons to select appropriate mode Press the AM SYNC button to activate or deactivate the Synchronous detector With SYNC displayed press the LSB or USB button for select able sideband synchronous detection Press the AM SYNC button to retum to AM synchronous d
70. nated you are setting the local clock With Udisplayed you are setting the altemate clock Either clock can be set first Time isentered in a 24 hour format Enter the time in HH MM SS with the colons under stood If an erroneous entry is made simply enter the correct time again The incorect entry will scroll off the display Pressthe f button to start the clock when the actual time value agrees with the entered time Example for Local Clock Set With either frequency ortime displayed suppose it is desired to set 13 01 00 Pressthe F button then pressand hold the button until the colons flash rapidly Press the following sequence of numeric buttons 00 00 01 00 00 13 00 01 30 00 13 01 01 30 10 13 01 00 When the actual time is 13 01 00 Pressthe button The clock is now started TIMER OPERATION Two programmable event timers allow the receiver to tum ON or OFF at preset times The timers may be used separately ortogetherand may recalla curently displayed frequency memory channel ora combina tion of both In addition programming only an OFF time providesa Sleep timer programming only an ON time providesa Wake timer Note thatthe timers when activated respond to the last displayed clock Programming the timersisa two step process S
71. nnel The readout will also display the channel name if assigned and selected in addition to variousprogramming and erormessages For memorylist sc ans the two left most digitsdisplay an Index number In the clock mode indicates either Local or Universal time in24hourformatasselected Time display isasfollows HH MM SS In the Timermode indicatestime in 24 hour format as follows HH MM with no seconds indicated 2 MEM TUNE This annunciator indicates the current memory location MEM will light when the receiver enters the Memory mode and all memory channel locationscan be sequentially tuned by use of the TUNE _ _ With TUNE buttons or Tuning wheel Q displayed use of the Tuning wheel will allow the the user to tune away from the selected memory channel 3 BANDWDTH MODE Indicators The currently selected IF filter Bandwidth and mode of reception are indicated ForFM mode operation only the mode FM isdisplayed When AUTO isilluminated the appropriate bandwidth is automatically set forthe corresponding selected mode Note The AGC setting tuning step size display resolution and bandwidth are user programmable and stored per mode The modesare AM Amplitude Modulation AM SYNC Amplitude Modulation with Synchronous Detection AM SYNC LSB USB Amplitude Modulation with Sync hro nous Detection of either the selected upper or lower sideband portion of a
72. ns or tuming the Tuning wheel pressing the by directly entering the three digit memory number A MEM TUNE First be sure that the receiveris in the VFO mode MEM MEM TUNE or Scan not displayed Pressthe wu button MEM TUNE should be displayed If not press the mem button and hold to switch to MEM TUNE A confirmation AOS beep willbe heard Pressthe buttonsordirectly enter the desired three digit memory number Normal VFO operation will resume and the MEM TUNE indicator will extinguish if the Tuning wheel istumed To recall the original memory settings pressthe button To save any altered settings press the gt button and within three seconds enterthe three digit memory num ber B MEM First be sure that the receiver isin the VFO mode MEM MEM TUNE or scan notdisplayed Pressand hold the we button until a confirmation beep is heard and the MEM annunciator is displayed Select the desired memory ea channel by tuming the Tuning wheel pressing the buttons or directly entering the three digit memory number To retune the frequency pressthe m button and the receiverwillretum to VFO mode Contentsofthe memory channelare notlost Altemately to retum to the VFO mode press the VFO function line button The re ceiverretumsto the VFO mode and restoresthe last used frequen
73. old electrical appliances portable tools and similar electrical X prEN 55024 2 Electrostatic discharge requirements apparatus ESD IEC 801 2 Limits and methods of measurement Xl prEN 55024 3 Radiated radio frequency electromagnetic of radio disturbance characteristics of field IEC 801 3 flourescent lamps and luminaries PQ pr EN 55024 4 Electrical fast transient requirements immunity from radio interference of Burst IEC 801 4 broadcast receivers and associated equipment C prENV 50142 Surge immunity requirements IEC 801 5 Limits and methods of measurement of radio disturbance characteristics of L ENV 50141 Immunity to conducted disturbances information technology equipment induced by radio frequency fields above 9kHz IEC 801 6 LI Cabled distribution systems Equipment for receiving and or distribution from sound and television signals C EC conformity marking Replacement of EN60555 2 3 The manufacturer also declares the conformity of above mentioned product with the actual required safety standards in accordance with LVD 73 23 EEC XI EN 60065 Safety requirements for mains operated electronic and related apparatus for household and similar general use Kl EN 60950 Safety for information technology equipment Manufacturer Importer DRAKE Stamp Date July 01 1997 including electrical business equipment Signature Mouth L Wy sang Name Ronald E Wysong
74. on 2 0 Setup Procomm must be configured for direct connection at 9600 baud using 8 data bits 1 strip bit and no parity Go to the Terminal Options setup screen Software flow control KON XOFF should be off Hardware flow control RTS CTS should be on Terminal emulation should be set to ANSI ANSI 7 or 8 bit commands st to 8 bit Go to the General Options setup screen Set Transmit pacing to 0 milliseconds Go to the Protocol Options menu and select ASCII protocol options Then set Character pacing to 0 milliseconds Set Line pacing to 0 seconds Set Pace Characterto 0 Set strip 8th bitto no Make certain that the R8B squelch is open Squelch control fully CCW To Transfer Memory Channels from an R8B to a PC file Pressthe PC Page Down button From the resulting menu select Raw ASCII This action will result in a dialog box requesting a file name Type in the desired path and file name and press Enter Type BRxxx yyy where xx isthe numberof the lowest channel to be transfered and yyy isthe numberof the highest Press Enter This will start the transfer When the transfer is complete press Esc to save the file RS 232C Interface continued 29 4 Format RS 232C levels at rear panel connector 9600 baud half Duplex 1 start bit 8 data 1 stop bit no parity Data is ASCII encoded 5 These commands allowed even if power is tumed off see PO PF Others are locked out 6 Backspac
75. only afterthe receiver stopsona station Allotherfunctionsare locked out until scan functions are terminated AN Pressing the buttonsduring scan willreverse the N scan direction When starting a scan the direction is always the same asthe last time a scan wasended Scan Functions 19 Receiver AUTO AM SYNC kHz 60 4 0 LSB USB 2 31 8 CW FM 0 5 RTTY 12 ON OFF PRE ATTN AGC S F NB N W TIMER CLK FREQ ANT 1 2 VHF NOTCH NAME STEP LOCK y B MHz W MODE SCAN MEM SEEK LIST TIME A B CARR VFO A B A B FIGURE 13 SCAN MEMORY To scan all unlocked memory channels from 000 to 999 Press f w selects memory scan Result MEM lights in status area Select method SEEK F or TIME f or CARRIER F Result SEEK TIME or CARR lights in status area Adjust squelch to quiet receiver audio Press S flashes in statusarea and MEM SCAN is displayed when the scan is activated Scandirectionmay be reversed withthe buttons eal Scanning can be stopped or restarted with repeated depressions of the sca button When scan action is stopped the receiver remains in MEMORY mode Press VFO to retum to last VFO frequency before entering the
76. ort aspossible 10 TIMER This 5 pin din connector provides switc hing contactsforon off control of an extemal device suchas a cassette tape recorder Refer to the CLOCK amp TIMER FUNCTIONS section of this manual 11 MUTE The RCA connector provides a method of muting the receiver for use with a transmitter Ground center pin to mute 12 Interface RS 232C This9 pin DB 9connectorprovides a standard RS 232C interface to a keyboard terminal Referto the RS 232C INTERFACE section of thismanual 13 UNE AUDIO OUT Both RCA connectors provide a constant low level audio source independent of the setting of the volume control They are designed to interface to tape recorders CW RTTY demodulators amplifiers etc 14 EXT Extemal Speaker This connector accepts a standard 1 4 diameter 2 circ uit monaural phone plug for connection of a 4 8 ohm extemal speaker 15 Speaker Switch INT BOTH EXT This 3 position switch allows selection of intemal only both intemal and exter nal orextemal only speaker outputs Mute Operation of the Receiver 1 MUTE OPERATION OF THE R8B COMMUNICATIONS RECEIVER When using this receiver with an extemal transmitter it is often desirable to be able to extemally mute the receiverduring transmission The receiver providesthis external control by use of the MUTE connector located onthe rear panel Grounding the center pin ofthisconnectorforcesthe AGC circuitry to shut down all RF IF stages t
77. ovided for ventilation To ensure reliable operation of the video product and to protect it from overheating these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface 10 Grounding or Polarization This product is equipped with a 3 wire line cord receptacle It is intended for use with a 3 wire properly grounded power socket Do not defeat the safety purpose of the supplied line cord and plug 10A Mise a la terre ou Polarisation Cet appareil est quip avec un cordon d alimentation trois fils Il est a brancher sur une prise ayant un connecteur ala terre Assurez vous que la connection ala terre ne manque pas 11 Power Sources This product should be operated only from the type of power source indicated on the marking label If you are not sure of the type of power supplied to your home consult your appliance dealer or local power company 12 Power cord Protection Power supply cords should be routed so they are not likely to be walked on or pinched by items placed upon or against them Pay particular attention to cords at plugs convenience receptacles and the point where they exit from the appliance 13 Lightning For added protection for this product during a lightning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet 14 Power Lines An outside antenna system should not be
78. r intelligence being transmitted changes the instantaneous frequency of the transmitter c amier Notto be confused with the FM BroadcastBand frequen cies of 88 to 108 MHz 10 High Q Electronically Switched Filter A multi band width filter with high adjacent channel attenuation switched electronically 11 GMT Greenwich Mean Time 12 LCD Liquid crystal display composed of two Glossary of Terms 31 parallel glass plates with conductive coatingssandwich ing a liquid crystalcompound between them The com pound becomesopaque and reflective when subjected to an electric field LCD displays are used as information displayson many types of electronic equipment 13 LSB Lower Side Band the miror image of the USB containing allofthe modulation information ofamplitude modulation in one half the bandwidth The lower haff excluding the camer of an AM signal 14 Notch A response producing attenuation of signals overa namow range of frequencies 15 Passband Offset A frequency conversion technique which skewsthe desired channeloffcenterof the detec tion filters allowing low orhigh frequency components to be selectively attenuated 16 Passive Double Balanced Mixer A frequency conver sion device requiring a locally generated oscillator LO to operate Anincoming RFsignalisshifted relative to the LO producing an intermediate or IF frequency 17 RF Radio frequency 18 RS232 Electronics Industries Association s
79. r re aquires lock The SYNC annunciator will flash briefly until lock is achieved The detectoralso pemits selectable tuning to eitherthe upper orlowersideband portion of an AM signal Since most all AM LW MW and SW broadcasting generally usesdouble sideband transmission detection of eitherof the two sidebands results in full reception of the transmit ted information The selectable sideband tuning and detection not only aidsreception by permitting tuning to the stronger or less distorted sideband but also permits rejection ofthe sideband nearerto the interfering signal s ForExample Select LSB CARRIER f aspas LSB USB inte eae ice rom ne r N Kr a adjacent station The synchronous detector will lock to the strongest signal thatis within the IF passband when itisactivated Mostof the time the strongest signal will be the camer of the desired signal First be sure the main tuning isset to within 1kHzof the desired station stransmitting frequency Press the button to activate synchronous operation If adjacent channel interference or any other undesired Signal issufficiently strong the synchronousdetectormay lock to itinstead In that case pressthe 4M button to tum the synchronous detector off and repeat the tuning process Forsevere casesof fading set the audio band width to 4 kHz If interference is present press the LSB or USB button with the AM SYNC active to select the side band with the least int
80. ral Description I DRAKE R8B Communications Receiver 5 7 9 20 40 60 SCAN MEM SEEK LIST TIME A B CARR VFO A B PRE ATTN AGC S F A B ANT D 2 VHF NOTCH DECIBLES SIGNAL MHz W ope AUTO AM SYNC kHz so Ap 158 USB fan 12 ON OFF TIMER CLK FREQ STEP LOCK NOTCH TONE A O The R8B communications receiver is a microprocessor controlled synthesized all mode word band receiver with continuous coverage capability from 100 through 30 000 kHz The receiver offers exc ellent sensitivity selec tivity high dyna mic range and offersfeaturesforthe most demanding shortwave reception Conveniently located front panel controls allow for rapid operator program ming and ease of use Operating mode and comespond ing bandwidth are quickly selected by front panel but tons The selectable AC inputallowsforoperation around the word In addition a DC input is provided for mobile operation A High Q 8 pole electronically switc hed IF filter provides a range of five commonly used bandwidths These band widths are automatically selected by mode however any bandwidth may be selected atthe touch ofa button The front panel liquid crystal display provides visual feed backto the operatorof the current statusof the receiver The seven digit frequency display allowstuning resolution to 10 Hz accuracy In the AM mode a selectable sdeband synchronous detector SYNCHRO allows for
81. rom the rear panel switch then reconnect the power Continued PWRFAIL messages under a known good powersource could indicate rec eiverpowersupply prob lems Should thisocc ur contactthe Service Department UNLO CKD unlocked indicates that the synthesizer of the phased locked loop circ uitisnotlocking to the proper frequency If thisshould occurwith the receiver contact the Service Department with details on what operations are affected 36 Service SERVICE INFORMATION You may contact R L DRAKE Service Department for additional information or assistance by calling 513 746 6990 Monday through Friday 8 00 A M 5 00 P M EST except on holidays You may also contactthe R L DRAKE Service Department by E mail at the following address service rdrake com orby Telefax 1 513 743 4576 IF YOU NEED TO CALL FOR HELP Call our Customer Service Tec hnical Support line at 513 746 6990 between 8 00 a m and 5 00 p m EST weekdays Please have the unit s serial number avail able We will also need to know the specifics of any other equipment connected to the unit When calling please have the unit up and running near the phone if possible Our technician s will likely ask certain questions to aid in diagnosis of the problem Also have a voltmeterhandy if possible R L DRAKE also providestechnical assistance by e mail bill frostt rdrake com orby Telefax 1 513 743 4576 Many of the products that are
82. rovides nine distinct scan functions which are programmed with keys 1 6 on the numeric keypad and indicated in the scan status area of the display Keys 1 3 are considered modes 1 Scansall unlocked memory locations 2 Scansall unlocked memory locations within a userselected group orgroupsof channels 3 Scansfrom frequency A to frequency B Keys 4 6 are considered methods 4 Stops scan at first camer detected 5 topsat detected canier for five seconds then resumes scan 6 Stops at detected canier until carmierdrops for five seconds then resumes scan A scan program therefore consistsof any combination of a mode and method Forexample scanning Ato Band stopping ata detected canjierfive seconds then resum ing would be programmed with F es f and display would indicate A Band TIME Table 3 chartsthe nine 9 scan functions Scan methodscannotbe changed while the receiver isscanning The STEP size however can be changed while the receiverisscanning Pressthe button followed by the STEP function line button The PREAM PUFIER and or ATIENUA TO R setting is unchanged from the setting priorto starting the scan but may be changed while the receiveris scanning Pressthe F button followed by the PREamp ATITEN function line button The clock display can be accessed while the receiver isin the scan mode but
83. s product Therefore carefully read the Instruction Manual This warranty does not apply to any defect that R L DRAKE COMPANY determines is due to 1 Improper maintenance or repair including the installation of parts or accessories that do not conform to the quality and specifications of the original parts 2 Misuse abuse neglect or improper installation 3 Accidental or intentional damage All implied warranties if any including warranties of merchantability and fitness for a particular purpose terminate one 1 year from the date of the original purchase The foregoing constitutes R L DRAKE COMPANY S entire obligation with respect to this product and the original purchaser shall have no other remedy and no claim for incidental or consequential damages losses or expenses Some states do not allow limitations on how long an implied warranty lasts or do not allow the exclusions or limitation of incidental or consequential damages so the above limitation and exclusion may not apply to you This warranty gives you specific legal right and you may also have other rights which vary from state to state This warranty shall be construed under the laws of Ohio For service information contact Service Department R L DRAKE COMPANY 230 Industrial Drive Franklin Ohio 45005 U S A Customer Service Center Phone 1 513 746 6990 TELEFAX 1 513 743 4576 WORLD WIDE WEB SITE http www rldrake com A R L Drake Company
84. sent to usfor repair are in perfect working order when we receive them For these units there isa standard checkout fee that you will be charged Please perform whatever stepsare applicable from the installation sections of the Owner s Manual before calling or writing this could save unnecessary phone charges Please do not retum the unit without contacting R L Drake first it is preferred to help trouble shoot the problem overthe phone orby mail first saving you both time and money Inside the carton enclose a note with yourname address daytime phone number and a description of the unit s problem The unit must be sent to the following address Service Department R L DRAKE COMPANY 230 Industrial Drive Franklin Ohio 45005 U S A Be sure to include your street address which will be needed for UPS retum UPS Surface Brown Label takes 7 10 days to reach us depending on your location Blue takes 2 3 days Should you want to retum your unit forservice package the receiver carefully using the original carton or other suitable container Write your retum address clearly on the shipping carton and onan enclosed cover letter describing the service required symptoms orproblems Also include your daytime telephone numberand a copy of your proof of purchase The receiver will be serviced under the tems of the R L DRAKE COMPANY Limited Waranty and retumed to you Red isan ovemight service and is expensive Send the uni
85. sing the button during scan will reverse the a scan direction Scanning can be stopped or re started with repeated depressionsof the s button When scan action isstopped the receiverremainsin MEMORY mode Press VFO to retum to the last VFO frequency before entering scanorM to load contentsofindicated memory channel into indicated VFO LOCKING A MEMORY CHANNEL First be sure the receiveris in the VFO mode MEM or sc not displayed A Press u and select desired memory channel with S the buttons or by direct entry of a two digit memory channel If recalling an unprogrammed channel with direct entry an eror beep is heard and Enor is dis played B To lock memory channel Press LOCK A confirma tion beep will be heard and MEM will now flash To unlocka locked memory channel Press F LOCK A confirmation beep will be heard and MEM will stop fla sh ing C Press wx or VFO to retum to VFO mode La SCAN A B An A B scan allows continuous tuning of frequencies between two programmed limits Table 4 charts the tuning step size and display resolution for the various modes In scan and with F displayed press the STEP function button to select scanning resolution and its corresponding display resolution With Step 1 scan ning resolution enabled if the selected scan range includest
86. t a two digit Index Number also lights in the upper left hand numeric digits of the display The index number is useful to catalog multiple lists for scanning aN The index numbercan be scrolled by pressing the or button buta single list scan isaccomplished only lt lt by entering the desired List Number Select method SEEK orTME F or CARRIER f Result SEEK TIME or CARR lights in status area Adjust squelch to quiet receiver audio Press sean lights in status area when scan is activated and display will indicate MEM SCAN until scan ning detectsa ca merona scanned channel Upon camer detection the will flash Pressing the or i buttonsduring scan will reverse the scan direction Scan ning can be stopped orre started with repeated depres sions of the s 4 button When scan action isstopped the receiver willbe in MEMORY mode Press VFO to retum to last VFO frequency before entering scan or w to load contents of indicated memory channel into indicated VFO B Multiple LISTscan Press f selects list scan Result USTfla shes in the status area and the memory channel number will display the first List number in the current setup An Index number will also light in the upper left hand numeric digits of the display
87. t in a way that it can be traced if we can t verify receipt of shipment We suggest UPS or insured postal shipment If the unit is still under the original owner s warranty R L DRAKE will pay the cost of the return shipment to you Our retum shipping policy is that we will retum it UPS Brown if received Brown or by US Mail it will be retumed Blue if received Blue or Red or it will be retumed however you prefer if you fumish the retum cost forthe method you select If the unit is out of warranty it willbe retumed by UPS Brown label COD unless 1 It was received UPS Blue Red in which case it will be retumed UPS Blue Red COD 2 You designate billing to American ExPress VISA MasterCard or Discover card 3 You prepay the service charges with a personal check or 4 You specify some other method of retum When calling the technician can estimate the repair charges for you over the phone This is another good reason to call before sending a unit in for repair Typically equipment is repaired in five to ten working days after it arrives at R L DRAKE if we have all the facts If we must call you it may take longer R L DRAKE is not responsible fordamage caused by lightning nonprofes sional alterations acts of God shipping damage poor storage handling etc R L DRAKE will make note of any shipping damage upon receipt Should your waranty card not be on file at R L DRAKE you will need to send proof of purchase to
88. ta strings sent for each of those would be ch 21 data 00 70 56 34120000 N A M E O7F ch 22 data 00 25 12 94 02 00 00 O7F Thus instead of sending 28 bytes forthese two channels only 20 are required to convey all the information Similarly a 7F can be used to indicate a blank channel in a string In the above example if channel 22 were blank the string for channel 22 could be sent as simply ch 22 data O7F This reduces the data fora blank channel from 8 meaningless bytesto only 1 Data sentin a block store must be terminated with a hex value of 7D Data for various fields listed above Noise Blanker 2 bits 00 OFF 01 NARROW 11 WIDE Mode 3 bits 000 LSB 001 USB 010 RTTY bytes 2 5 frequency in little endian form These are the digits of AGC 2 bit 00 OFF Samer the frequency in decimal form but in reverse order pairs For 10 FAST 101 AM example a frequency of 123 45670 MHz would be entered as 70 Bandwidth 3 bits 000 0 5 kHz 56 34 12 The MHz dec imal is always fixed between the nibbles of AMENA eee LEON oor Doe byte number 4 10 ANT2 011 4 0 kHz 100 6 0 kHz Table 6 RESPONSE TO THE RM AND RMR COMMANDS x x x x X CR IF ae ee SOS FIRST SECOND THIRD FOURTH FIFTH CHARACTER CHARACTER CHARACTER CHARACTER CHARACTER ASCII CHARACTER DISPLAYED NOISE NOTCH SYNCRO MHz ONSCREEN BLANKER AGC RF ALTER ANT MODE BANDWDTH VFO DET SCANNING kHz ASC
89. tandard physic al level interface between DTE terminal and DCE modem 19 RITY Radio Teletype communications 20 Squelch A usercontrolled adjustment which mutes the audio output below a certain signal strength 21 Synchronous Detector An amplitude modulation detectorwhich utilizesa replica ofthe originaltransmitted camer signal to improve the reception of weak signals 22 Synthesized Capable of generating a large number of different output frequencies all related to a single highly stable reference source 23 Up Conversion A frequency conversion technique that translates an incoming RF signal to a higher fre quency 24 USB Upper side band the mirror image of the LSB containing allofthe modulation information ofamplitude modulation in one half the band width The upper half excluding the canier of an AM signal 25 UTC Universal Time Coordinated 26 VFO Variable frequency oscillator 27 VHF Very High Frequency band extends from ap proximately 30MHz to 300 MHz 32 Suggested References SUGGESTED REFERENCES 1 Passport to World Band Radio Published by Intemational Broadcasting Services Ltd P O Box 300 Penn s Park Pennsylvania 18943 2 World Radio TV Handbook Volume 37 Published by Billboard Publications Inc 1515 Broadway New York NY 10036 3 The ARRL Antenna Book Published by The American Radio Relay League Newington CT USA 06111 Copyright 1988 by The America
90. tep one isto set the ON and OFF times Step two isto assign a frequency ormemory channel to a timer This assignment occurs when the desired timer is actually enabled SETTING TIMER ON OFF TIMES Press and hold the TIMER function button for approxi mately 2 secondsuntil the ON annunciatorflashes The ON Time will also be indicated in the frequency portion of the display same readout format asthe clock as well asthe number1 or 2 displayed to the left of the ONannunciator The number 1 or2 indicates which one of the two event timers you are programming Clock and Timer Functions continued 29 Pressthe desired numeric buttonsto entera new ON time Enterthe time in HH MM and in 24 hour format Pressthe button followed by the button to remove the On Time to use the timerasa Sleep timer Fora Wake timer program an On Time and remove the OFF time To set the OFF time Press the TIMER function button again to display OFFtime Press the desired numeric buttonsto entera new OFF time Enterthe time in HH MM and in 24 hour format Pressthe f button followed by the button to remove the OFF time if desired Press the TIMER function button again to enter TIMER 2 ON time Press the TIMER function button again to enter TIMER 2 OFF time Finally press the TIMER function button to save the settings and switch the display to normal readout valu
91. the clockwise setting Adjust control to nullify an undesired signal AM SYNCHRONOUS DETECTOR OPERATION Forgeneral tuning and listening the normal AM detector is best It allowsnomalAM reception while providing the capability to offsetthe IFpassband withoutcausing distor tion Ifthe received signalisexpenencing severe fading as iscommon on many SW and BC bands the synchronous detectorshould be engaged Make sure the main tuning issetto within 1 kHzofthe station stransmitting frequency Adjust the PASSBAND OFFSET controland change band width asrequired to minimize any interference PressAM SYNC to activate the synchronous detector The word SYNC is displayed following AM to indicate the synchro nous detector is selected and locked SYNC will flash to indicate that the detectorisacquirnng lock Thisdetector providesa very powerfulaid in reduc ing the severe audio distortion thatcanoccurduring the time period when the camer of the received AM sgnaliscancelled orreduced by propagation effects When the synchronous detector has been activated moving the main tuning will automatically switch the receiver out of synchronousdetection while the sync hro nous detector re aquires lock The SYNC annunciator will flash briefly until lock is achieved Also moving the PASSBAND OFFSET control while the synchronous detec tor is engaged will cause the receiver to momentarily switch out of synchronous detection while the synchro nous detecto
92. to set the powerOn state brightness Now the lamp will automati cally change to the desired brightness for poweron and poweroff states Thiscan be used to dim orblackoutthe display when power is off without changing the lamp state during use of the radio x POWER ON BUTION FUNCTIONS Pressthe button shown while tuming poweronto perfom the indicated function Indicates hold fortwo seconds Toggle 9 10 kHz selection A B CARR 12 0NOFF VFO A B PRE ATTN acc S F NB NW TIMER CLKIFREQ A B AN U 2 VHF Notch ame step Lock Display softwa re revision number C lear ALL memory channels Master reset of all radio settings 10 kHz 9 kHz SCAN Ifa selected scanrange includesthe 540 1800 kHzbroad castband the receiverautomatically switchesto a 10kHz step size while the receiver scans the broadcast band if the Step 1 5kHz scanning resolution is enabled The 10 kHz step size is practical fortuning the U S and Cana dian broadcast bands The step size canbe changed to 9 kHz for the 540 1800 kHz broadcast band to permit practical tuning of European broadcast stations To se lect the altemate step size With the POWER OFF Pressthe TIMER STePfunc tion button and hold while press ing the POWER button If the step size was 10 kHz priorto performing the above procedure then the 9 kHz step size isnow programmed To change bac
93. tthe desired IF Bandwidth AUTO MODE and the Default BANDWIDTH STEP AGC Set tings Ifthe AUTO mode isselected the default Bandwidth Step and AGC setting are automatically recalled when the mode is changed These defaults are user program mable To set the default tum AUTO off press the AUTO button until AUTO is extinguished in the display area Set the Bandwidth Step and AGC asdesired forthe defaults Pressand hold the corresponding MODE button forwhich the defaults are being set A memory beep will indicate that the defaults have been stored Repeat the above procedure for all modes that are to be programmed Once the defaultsare programmed and the AUTO mode is selected changing modes will recall the user pro grammed BANDWIDTH STEP and AGC settings 6 Checkthat SPEAKER switch on rearpanelison desired setting 7 Adjust VOLUME VOL control for desired level Adjust SQUELCH control fully countercloc kwise Adjust RF GAIN control fully clockwise Press the entry units 8 Press the CLK FREQ button as required to display frequency Use the numeric keypad to enterfrequency x button followed by wx to set frequency 2 inMHzorkHz asindicated directly oruse the or NE tuning buttonsto rapidly tune neara frequency then fine tune with the tuning knob FREQUENCY STEP SELECTION TUNING WHEEL STEPS The receivercan be programmed to tune in three
94. uch as volume RF gain etc are not controllable The receiver front panel buttons and tuning wheel are nor mally operable when the receiver is under computer control The buttonsand tuning wheelcanbe locked out if desired either by pressing the button sequence F LOC Kfunction line button orby use of the LO computer command Please referto FIGURE 17 forinterface connectorpin out Rear Panel View INTERFACE 67 89 0 o o o lI 2 3 4 5 RS 232C Pin Signal Description 1 Scan Feedback 5 Volts Receiver Unsquelc hed 2 Rx DATA 3 Tx DATA 4 No Connection 5 Ground 6 DSR 7 No Connection 8 CTS 9 Ground FIGURE 17 RS 232C Interface Connections PROCOMM PLUS is registered to Quarterdeck Corporation P O Box 18049 Clearwater Florida 34620 BITCOM is registered to BIT Software Inc 830 Hillview Court Suite 160 Milpitas CA 95035 RS 232C Interface 2 7 NOTE The following additional items apply when using the RS 232C Interface capability of the receiver WARNING SHIELDED INTERFACE C ABLES MUST BE USED WITH THIS RECEIVER FOR FCC COMPLIANCE TO LIMITS FORA CLASS B DIGITAL DEVICE When interfacing the receiverto a computerutilizing a 25 pin male connectorforthe RS 232C serialport the follow ing wiring convention should be followed Receiver DB Connector Computer DB25 Connector CONAHAUAWNE Nu asian Nin wo
95. wing voltage ranges 90 110 VAC 108 132 VAC 180 220 VAC and 216 264 VAC Most countries outside the U S and Canada use either 220VAC or240VAC line voltage Please be certain ofthe operating voltage before connecting to the mainssource The receiver will operate on either 50 Hz or 60 Hz line frequency Note The waranty doesnotcoverdamage asa result of improper voltage selection or replacement of fuse with ratings other than those specified FIGURE 1 VOLTAGE SELECTOR SWITCH SETTINGS Setting for 108 132 VAC Fuse rating 400mA Setting for 90 110 VAC Fuse rating 400mA DISCONNECT FROM DISCONNECT FROM SUPPLY BEFORE CHANGING RANGES SUPPLY BEFORE CHANGING RANGES Setting for 180 220 VAC Fuse rating 200mA Setting for 216 264 VAC Fuse rating 200mA DISCONNECT FROM DISCONNECT FROM SUPPLY BEFORE CHANGING RANGES SUPPLY BEFORE CHANGING RANGES Y Antenna grounding isnec essaryifthe unitisconnected to anoutdoorantenna Grounding of the antenna system isrequired to protectagainst static build up and voltage surges Referto section 810 21 of the National Electric Code ANSI NFPA No 70 1990 The powercord and antenna lead in should be discon nected ifthe unitisnotto be used foran extended period of time or if threatening weather containing damaging lightning is likely CAUTION In accordance with intemational safety standards this instrument is equipped with a three wire powercable receptacle The unitisship ped w
96. y 3 700 KHz 70 MHz Press After3 second pause frequency will be entered TO ENTER FREQUENCY IN kHz Press F Wrz to select kHz display mode if not already selected Enterfrequency in kHzbeginning with the most Significant digit followed by a double depression of the button Example 1 700 kHz Press DEL DEL CLR CLR 7 0 0 Frequency willbe immediately displayed Attempting to enter a frequency outside of the tuning range of the receiverwillcause the word ERRORto be displayed along with the error beep to be heard The receiver will then retum to the last displayed frequency 14 Getting Started continued FRONT PANEL LOCK UNLOCK First be sure the receiver is in the VFO mode MEM or SCAN not displayed All button entries display settings and the large tuning knob can be locked if desired Press f LOCK to lock front panel All analog control knob functions except tuning will still emain operable Press f LOCKto unlock frontpanelif previously locked PASSBAND OFFSET OPERATION When the PASSBAND OFFSET control is centered the receiver will properly position its IF passband with mode change Occasionally an interfering sgnal will appear above or below the desired signal Rotating the PASS BAND OFFSET or will reduce or eliminate
97. z 50 kHz Threshold 0 8 uV Attack time 1mS Release time SLOW 2 Sec FAST 300mSec Nominal6dBchange inau dio output for 100 dB input change above AGC threshold 50 Ohms unbalanced 50 or 500 Ohms unbal anced AF type 40 dB min Depth 500 5000 Hz 2 5 W 4Ohms less than 5 distortion 300 mV 4 7K Ohms 100 120 200 240VAC 10 50 or 60 Hz 40 Watts nominal 11 16 VDC 2A 10 to 50 Celsius 13 Ibs 5 9 Kg Width 13 1 8 33 4 cm Height 5 1 4 13 4 cm in cluding feet Depth 13 33 cm includ ing front knobs and rear connectors ACCESSORIES Accessories for the receiver include 1 A VHF converterwith frequency coverage of 35 55 MHz and 108 174 MHz 2 A complementary styled MS8 extemal speaker CAUTION The optional VHF Converter accessory should be installed by a qualified service technician to prevent personal injury ordamage to the equipment Introduction Safety Voltage Selection 3 SAFETY VOLTAGE SELECTION WARNING Please read before applying power The receiverisno mally ship ped with the inputline voltage selectorswitch setto 108 132 VAC foroperation in the U S and Canada If your operating voltage is different than this please referto FIGURE 1 below The voltage select switch islocated onthe rearpaneland must be setto the proper voltage range for your area In addition the propermainsfuse may need to be installed The unit may be set to operate over the follo

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