Realistic Portable Radio pro 5 User's Manual
Contents
1. RADIO sHack W 4 TANDY CORPORATION COMPANY U S A FORT WORTH TEXAS 76107 CANADA BARRIE ONTARIO CANADA L4M 4W5 TANDY CORPORATION ANRE AUSTRALIA BELGIUM U K f 280 316 VICTORIA ROAD PARC INDUSTRIEL DE NANINNE BILSTON ROAD RYDALMERE N S W 2116 5140 NANINNE WEDNESBURY STAFFS WF10 7JN CUSTOM MANUFACTURED FOR RADIO SHACK CORPORATION COMPANY 8A4 Y25000 Printed in Japan Your REALISTIC Pocket Scan PRO 6 Scanning Receiver is super compact solid state Dual Band VHF dual conversion super heterodyne receiver capable of automatically scanning 4 crystal controlled channels Some special features are two ceramic filters channel lock out circuit skipper circuit and DC POWER jack for operation from an external source of 6 volts DC The Pocket Scan is intended to be used by Civil Defense personnel professional or part time public servants police firemen etc or just anyone interested in listening to the exciting action constantly taking place on the air waves in your locality It is designed for use in the narrow band FM channels of Public Service communications VHF band Police Fire Civil Defense Radio Telephone Forestry and weather service plus many other Industrial Radio Services These and many other services share this band of frequencies from 30 to 50 MHz and 148 to 174 MHz PRO 6 features both high sensitivity and se2. se a 5 O 2 3 ae gt gt gt lt 4S gt lt gu ge rey ag cx 9 ou gt a lt 2 eZ 5 Ye a9 eu 88 95 2 42 OE 45 55 lt gt 2 2592455 Surak 5 5 4 4 144344 483025 22 255 5 5 22 2 225042 25542 585 w wWwouctrow ro2 7 42 8 5551054 522 29 F aor 2 gt gt 2 3 Zonk eee RE lt 559484 28 n 5 5 52 gt 2 al 3 EZ ANG Be FI 279 SSO 28 3 0 B 9 5 les ga S mo go Lad 001 GY kaa 5 ED 8 10 019 9 f on 9029 69 401 80 cay eo 00t 5 N Tame 100 222 2 FQ 3 5 3 a y 51 6 8 2 74173 018 25 784 16 1 74103 014 17 TLR102 05 12 40 079 200 GED 9951 863 Baw HO A vee 1 2 016 17 25 394 4 LO SED INTERNAL ANT SCHEMATIC DIAGRAM VHF HI LO FRONT END 017 28C372 C 3 2 3 2 G D 01 2 HV80 TP 1 R3 470K ED a0 470K lt 11 339
3. BATTERY COMPARTMENT LED CHANNEL INDICATOR ANT JACK SELECTOR SWITCH SCAN STOP MANUAL EARPHONE JACK me CHANNEL LOCK OUT SW POWER VOL CONTROL SQUELCH CONTROL Crystal Compartment contains crystals selected for operation EXTernal Power and Battery Charge Jack The EXT POWER JACK is for connecting an external source of 6 volts DC negative ground so that operation without the use of batteries is possible NOTE The RECHARGE POWER JACK is to be used only when Nickel Cadmium batteries are installed in the receiver To recharge Nickel Cadmium batteries in the receiver simply plug an external 6 volt DC power source into the RECHARGE POWER JACK OPERATION After batteries and a crystal or crystals has been installed your PRO 6 is ready to use Turn VOLUME by rotating to the right Rotate SQUELCH to the minimum position by rotating to the left Set all the Channel Lock out Switches in the up position toward the LED indicators You should hear a rushing sound from the speaker Now adjust SQUELCH to the right until you reach the point where the rushing background noise abruptly stops lf you want the PRO 6 to continuously scan the channels for which you have crystals installed you must adjust SQUELCH as previously instructed then set the Selector Switch to the SCAN position The PRO 6 will constantly scan each channel in sequence when a signal appears on one of the chan
4. made to install 4 crystals each position can be used for either VHF Hi or VHF Lo Follow the illustration provided for proper installation of each crystal For VHF Lo crystals use the center and lower crystal socket holes For VHF Hi crystals use the center and upper crystal socket holes In the example shown Channel 1 will have a VHF Lo crystal and Channel 4 will have a VHF Hi crystal CRYSTAL COMPARTMENT COVER CRYSTAL CRYSTAL SOCKETS LO 4 gt O HI XTAL il a XTAL we COMMON FOR VHF HI LO y SPEAKER SIDE O O Ol O O OJ O O Since crystal frequencies must be extremely accurate and crystals should be matched for specific units we recommended you obtain crystals for your POCKET SCAN only from Radio Shack Be sure to specify the Catalog Number and Model description of your Monitor Receiver We can not be responsible for the poor or improper operation of crystals from another manufacturer s CONTROL LOCATION AND FUNCTION OFF VOL is the power switch and Volume control When not in use rotate this contro to the left to turn it off SQUELCH control 15 to eliminate annoying background noise between signal transmissions When properly set Squelch will keep the PRO 6 silent until a signal comes in on the channel s you are listening to then the Squelch circuit will open and you hear the signal Selector Switch is for determining the function of the scanning feature In th
5. K R13 330K R15 330K R17 330K T2 T3 ri 68 62 95 2 c16 x J1 Ti T2 T3 33071 4 5 2 ANT JACK 4 4 01 4 2 4 10 7MHz 455KHz 4 Sw caso 7 470P K i cra E2470 g A 7 ap S 5 59 DN A i e 5 S 5 S QV SY 470P 8 0 65 17 330 8 0 05 _ amp CD 2 8 5 _ slo gt 5 1515 5 VOLUME 10K A FH D1 5 sy x 5 or ae 22 2 3j S joje 6 ee 8 z m 9 m 12 6P R5 100K D R8 470K T4 T5 T6 274 7 5 1 1 47 C16 470P K 5 6 5 2 08 13 25 373 014 25 735 015 2SA562 Y 8 T SQUELCH Q14 5 10 R30 2 2K R33 270 hs J2 ST 29 1 N EARPHONE 2 5 JACK 09 U 1 01 4 25 784 0 x 2 24 R34 2 2 2 ee Tar i 8 162 5 D5 12 HV80 018 25 784 38 100 z CRYSTAL SOCKET z a 5 SS SS Se SN 3 se OFV 03 cs EXT POWER JACK GD 1 2 0 5 6 5 2 5 om 5 5 in ov 24 8 Zg x 9 BATTERIES eg On
6. e SACK Q e 6 wt oe 3 TN 5315 9 2 9 8 FUNCTION J1 ANTENNA JACK J2 EARPHONE JACK J3 EXTERNAL POWER JACK 44 CHARGE JACK 51 4 CHANNEL SELECTOR SWITCH 5 AUTO MANUAL SWITCH 56 POWER SWITCH Q20 23 25 373 014 17 TLR102 1 74103 2 74173 REMARKS 1 RESISTANCE VALUES IN OHMS K 1000 M 1000000 CAPACITANCE VALUES IN MF TANTALUM CAPACITOR MYLAR CAPACITOR C52 22 T R57 10K 0 62 R61 3 3K R58 470K R60 10K MAUN Na ALL VALUES AND RATINGS ARE SUBJECT TO CHANGE FOR ey IMPROVEMENT WITHOUT NOTICE 023 D20 100 10 D18 20 HV80 021 60 REMARKS C_DTHIs SYMBOL INDICATES DC VOLTAGE MEASURED BY V T V M AT THE CONDITION OF HIGH BAND 1 MANUAL OPERATED VOLUME MINIMUM POSITION AND 50 CONT OUT POSITION
7. e SCAN position each channe will be scanned automatically In the center stop position the PRO 6 will not scan but will remain tuned to the channel indicated by the LED To advance the receiver to the next channel in sequence press to the MANUAL position momentarily each time you do so the receiver will advance one channel Channel Lock out Switches in the position button next to the LED that channel is active When you press the switch down that channel is automatically locked out and will not function LED Channel Indicator these Light Emitting Diodes show which channel s is active During scanning these lights light up sequence when the receiver is operative on one of the channels the light for that channel will go on When the Channel Lock out switch for that channel is in the down position that LED wil not light EARphone jack is for plugging in the earphone Use it for private listening or in areas where background noise is excessive in factories at the scene of an accident or fire in a vehicle etc ANTenna jack is for connecting an external antenna to the PRO 6 You can use either the wire antenna provided or an outside VHF antenna Belt Clip is provided so you can attach the PRO 6 to your belt or other convenient place Battery Compartment holds internal power source 4 type AA batteries 3 CRYSTAL COMPARTMENT BELT CLIP EXT POWER JACK RECHARGE gar POWER JACK
8. is SPEAKER OUT OF SCANNING SQUELCH POWER 4 DECODER GENERATOR DELAY 2 ez EXT POWER JACK 6 DC 4 CHARGE JACK DISPLAY SKIPPER tL E D i Dia SCHEMATIC DIAGRAM 01 7 25 37210 VHF HI LO FRONT END 10KtA 7 500 122 29 5 4 Ze gt a 1128 ag WE Q 100 612 T3 4 4 1 2 rez N Q 1 C16 330P C1 330P 88 01 2 Hv80 4004 612 Zesty 1 001 BL R17 330K 6 1 f ML Ole 014 28C735 O15 25 562 R15 330K GD 6 C12 470P Plu G2 Me R13 330K K 17 GD 9 R11 33 ya h YQ T Q8 13 25 373 ge DEE LY R3 470K 4 470P 8 1 i 470 2 R 001 ZH H 004 9 9 10 22 42 PLI 100 513 01 4 25 78410 R1 100K 2 Sy 0 62 R5 100K gt K L ANT JACK J1 CLNY 2224 SPEAKER 34 01 M gt 28 ge ES ge x aa 2 sz gt 2 x 9 gt e gt E 5 5 5 os
9. ivel base Center loaded weatherproof coil With 5 RG 58 U cable Pin plug connector Catalog Number 20 016 FREQUENCY COVERAGE For maximum sensitivity the channel frequencies you choose should be within 3 MHz of 40 MHz on the LO VHF band that is in the spread of 37 to 43 MHz For the HI VHF band stay within 4 MHz of 153 MHz that is 149 to 157 MHz This Receiver will function very adequately down to 30 and up to 50 and from 148 to 175 MHz but with reduced sensitivity The superior reception spread of 6 8 MHz 43 4 MHz be moved up or down in this band of frequencies by special realignment of the front end circuitry of this Receiver which should be attempted only be qualified Electronics Service Technicians who have adequately calibrated precision test equipment With such realignment your Receiver can tune signals in the Ham bands and other services We call your attention to the fact that this Receiver is designed for reception of FM signals and thus can not be used for monitoring AM signals even though they may be within the frequency coverage range These AM signals include much of the aircraft services TYPES OF SIGNALS YOU LL BE ABLE TO MONITOR Your community is alive with action action which ts constantly being reported on the air waves And your PRO 6 will automatically scan the air waves to bring you that action your police force at work a fire truck on a mission Ham Radio opera
10. lched to full volume 2 Integrated Circuits 27 Silicon Transistors 17 Diodes 4 Light Emitting Diodes LED s 2 16 ohm Permanent Magnet dynamic type Built in wire loop plus external whip type wire Standard HC 25 u 3rd overtone __ PREPARING FOR USE To use your POCKET SCAN you must do two things Install the batteries Install 1 2 or 4 crystals To install the batteries turn the receiver face down and press in firmly on both sides of the receiver at the place marked BATTERY PACK and lift the compartment up and away Remove the battery pack Insert four AA batteries one at a time making sure the polarity markings inside the battery pack match up to and to with markings on the batteries We recommend Nickel Cadmium AA batteries Radio Shack Catalog Number 23 125 or AA NOVA CELL Catalog Number 23 453 be used in your new Receiver Press the Battery Pack into place press sides of Battery Pack in ward to snap it back onto the case BATTERY PACK Crystals not included with your POCKET SCAN because the frequencies are so numerous The frequencies used in your part of the country will be different from those used in other areas Your Radio Shack Store Manager will advise you as to what frequencies are most used and help you in your selection of crystals Remove the Crystal Compartment Cover by sliding it to the left and insert crystal into the crystal socket Lo or Hi Provision is
11. lectivity and a sophisticated circuit which includes 10 7 MHz and 445 kHz ceramic filters to reduce or eliminate adjacent channel or strong signal interference Such interference is often experienced when operating in urban and metropolitan areas or where very strong and closely placed signals are present The PRO 6 represents some rather complex engineering and manufacturing achievements but is designed for very practical applications And still it is remarkably easy to use It can be placed in your pocket clipped to your belt or operated in your home office or vehicle You ll be amazed to realize that this small package contains densely packaged circuitry composed of 27 transistors two integrated circuits which incorporate the equivalent of hundreds of components 17 diodes and 4 Light Emitting Diodes LED s for the scanning indicators Your local Radio Shack store has a complete line of accessories for use with the PRO 6 extra batteries power adapters cables crystals antennas etc a oe GUARANTEE The RADIO SHACK guarantee is stated on the Guarantee card packed with the unit It is in effect from coast to coast At any time RADIO SHACK equipment can be restored to like new condition with original parts with minimum delay anywhere in the U S A normally right your own neighborhood In 98 of the cases it is not necessary to return RADIO SHACK equipment to our laboratories WARNING The PRO 6 is designed to ope
12. nels the receiver will lock onto that channel and you will hear the signal if you do not want automatic scanning one or more channels switch their Channel Lock out Switches to the off position down or away from the LED indicator If you want to stay tuned to one channel only set the Selector Switch to the center position stop scanning and then press to the MANUAL position to advance to the channel you want to listen to as indicated by the LED above that channel switch For MANUAL scanning the receiver can be either squelched adjusted as previously indicated or unsquelched SQUELCH control set to extreme left For AUTOMATIC scanning SQUELCH must be set to eliminate the background noise To eliminate the annoying background noise rotate SQUELCH toward the right until the background noise abruptly stops You can t adjust SQUELCH property while listening to a station so wait until signals cease you set SQUELCH as noted above the PRO 6 will appear dead until a signal comes in when a signal comes the Squelch circuit opens and you hear the signal When the signal ceases the Squelch circuit closes and cuts out all sound until the next signal comes in 8 6 has built in loop antenna and in high level signal areas you may not need another antenna However in most cases you will want to use the wire antenna provided just plug it into the ANTe
13. nna Jack and extend the antenna vertically For the very best reception you will want to use an outside antenna see the ANTENNAS section ANTENNAS For superior reception you will want to use an external antenna such as Radio Shack Catalog Number 20 015 This antenna is designed for base station operation If you intend to use your POCKET SCAN in a vehicle we recommend Catalog Number 20 016 You will need coaxial cable to connect between the base station antenna and the POCKET SCAN use Catalog Number 278 970 50 feet of RG 8 U At the POCKET SCAN use a sub miniature phone plug on the end of the coax cable 274 289 or a combination of adapters which will mate into a male sub miniature plug For mobile use you can mount the POCKET SCAN permanently or temporarily In either case be sure it is positioned along with its cables in a safe and convenient location When you mount a mobile antenna keep the following points in mind 1 Mount the antenna as high as possible the center of the roof is best 2 It should be rigid so it will be vertical when in motion 3 Keep it as far as possible from the engine compartment the engine is a source of noise which will interfere with reception DUAL BAND VHF Ground DUAL BAND VHF Cowl Mount Heavy duty aluminum ele ments Matching trans former Mounting bracket Accepts PL 259 connector Catalog Number 20 015 For mobile Chrome tele scopic whip Sw
14. r 6 or 9 volts DC positive or negative This will permit you to use the PRO 6 in your car or truck without wearing down your batteries Of course with such an adapter you can recharge Nickel Cadmium batteries by using the RECHARGE POWER JACK MAINTENANCE The PRO 6 is ruggedly built electronic unit with parts conservatively rated However you should treat it with care don t subject it to excessively rough handling You will find it will give you long life if kept free from dirt and excessive humidity If the sound becomes weak and distorted it is time for new batteries We recommend Radio Shack Alkaline batteries Catalog Number 23 552 Or use our ENERCELL rechargeable batteries 23 125 you can recharge them hundreds of times If do not intend to use the PRO 6 for a few weeks it is best to remove the batteries Also never leave weak or dead batteries in the unit BLOCK DIAGRAM VHF FRONT END i ANTENNA JACK MIXER ceramic IF CERAMIC CRM a Hi UST FILTER MIXER FILTER 148 74MHz 7 2 455 kHz 02 91 93 2 04 9 Di Oz RF AMP MIXER LOCAL Lo UST OSCILLATOR 1 30 SOMH2 280 INTERNAL Q3 28 02 ANTENNA VOLUME CONT 2 H Jz SQUELCH CONT TFH NOISE AMP NOISE SQUELCH AUDIO SWITCHING AMP OSCILLATOR OSCILLATOR PSs DETECTOR 3 Qu 5 8 09 12 Qis Q
15. rate from four penlight AA batteries connected in series or an external source of 6 volts DC negative ground If it fails to operate and there is no clear reason for the failure first check the batteries Before you try connecting the PRO 6 receiver to an external 6 volt DC power supply check the voltage polarity Attempt ing to operate the negative ground PRO 6 from a POSITIVE GROUND electrical system may damage it The Radio Shack warranty does not apply to any damage caused by improper power connections or other damage caused by misuse damage or neglect SPECIFICATIONS CHANNELS OF OPERATION FREQUENCY RANGE FREQUENCY COVERAGE SENSITIVITY SELECTIVITY MODULATION ACCEPTANCE IF FREQUENCY FILTER SQUELCH SENSITIVITY SCANNING SPEED DELAY TIME AUDIO POWER POWER REQUIREMENTS SEMICONDUCTOR COMPLEMENT SPEAKER ANTENNA CRYSTAL REQUIREMENTS Four as determined by any one of 4 crystals operating in the frequen cy range 30 to 50 MHz and 148 174 MHz Lo 6 MHz for maximum sensitivi ty 40 MHz 3 MHz Hi 8 MHz for maximum sensitivi ty 153 MHz 4 MHz Better than 1 microvolt for 20 dB quieting 13 5 kHz 6 dB 20 kHz 50 dB 7 kHz 10 7 MHz and 455 kHz 10 7 MHz and 455 kHz Ceramic Filters Variable from less than 1 microvolt 6 channels second 0 7 to 1 5 seconds 150 milliwatts 6 volts DC negative ground only Current drain 40 to 100 mA no signal sque
16. rgency services If you are near a railroad yard or major railroad tracks look around 160 0 to 161 9 MHz for them NATIONAL WEATHER SERVICE RECEPTION Continuous weather broadcasts are transmitted 24 hours a day in many parts of the country If you are using a crystal set to one of the two channels assigned 162 55 or 162 40 MHz your Receiver will automatically lock in on that channel since the broadcasts are continuous To prevent automatic locking set the channel lock out button for that channel to the off position button out When you want a weather report set the Lock Out Button to the position press in for that channel In areas where two stations are close to each other one will use 162 55 and the other will use 162 40 MHz Check with your local FCC office or the Weather Bureau for the frequency used in your area ACCESSORIES Your PRO 6 can be powered from any source of 6 volts DC negative ground Using AC adapter will save on batteries so if you intend to use the PRO 6 in a location where 120 volts is readily available and it does not need to be moved around consider an adapter Radio Shack has two power adapters which you might be interested in Catalog Number 270 1531 is a universal adapter for 120 volts AC to provide 4 5 6 7 5 9 volts DC positive negative Catalog Number 270 1532 is a power adapter for plugging ne i e into a cigarette lighter socket your vehicle and providing eithe
17. tors highway and other emergency type services some industrial services some trans portation services taxi trucks railroad plus some Government services Lots of things are going on that most of us just are never aware of But with the right frequency crystal in your PRO 6 you can monitor such exciting signals You ll have to do a little investigating in your community to find out what services are active and on what frequencies You will find one of our books to be very interesting and helpful in this area REALISTIC GUIDE TO POLICE FIRE AND AIRCRAFT RADIO What to listen for and where That is a little difficult for a specific answer Each area of the country can and will use different frequencies All we can do is give you some general pointers and let you take it from there 10 Find out if there is local club which monitors these frequencies Often a local electronics repair shop that does work the equipment can give you the channel frequencies used by local radio services A volunteer police or fire employee can also be a good source of this information An interesting service is the Mobile Telephone FCC has assigned this service channels in the range of 152 51 to 152 81 MHz at every 0 030 MHz channels are 30 kHz apart As a general rule on VHF most activity will be concentrated between 153 785 and 155 98 and then again from 158 73 to 159 46 MHz Here you ll find local government police fire and most such eme
Download Pdf Manuals
Related Search