Kenwood TM-221ES User's Manual
Contents
1. 8 1 DDNDOOAAW 1 BEFORE OPERATION Safety precautions Warning When operating this transceiver mobile please drive safely Never remove the case unless specified in this In struction Manual If the internal parts are accidental ly touched a serious electric shock might occur v Never touch internal parts If a metal object such as a hair pin or a needle comes into contact with the power socket on the rear panel a dangerous electric shock may result For families with children never permit children to put anything especially metal inside this unit Pues N Touching the power plug when your hands are wet may result in a serious electric shock VU AT Never touch with wet hands orv 7 s n Never pull bend or stretch the power cord This could damage the power cord resulting in a broken cord or short circuit Ae x Always grasp the plug fixi In case of abnormal smell If abnormal smell or smoke is detected im mediately turn the power OFF and disconnect the power cord Contact your dealer or nearest Service Station Notes on installation Do not place the unit in a place which is exposed to direct sunlight near a heating appliance etc Do not store or use the unit in a dusty location or in a moist atmosphere Select a location that is well ven tilated To maintain good ventilation do not cover the unit Place the unit at least 10 cm 4 inch away2. 4 mes MC 55 48 AUTOPATCH UP DOWN HAND MICROPHONE 8 pin The MC 48B is 16 key autopatch Up Down microphone with PTT switch Encodes 16 autopatch tones UP DWN switches provide step frequency change or initiate band scan in the appropriate direction if held depressed momentarily MC 48B HS 7 MICRO HEADPHONES 16 ohms SW 200A 200B SWR POWER METER supplied with a coupler SW 200A supplied with SWC 1 SW 200B supplied with SWC 2 Selectable peak reading RMS SWR POWER meters cover 1 8 150 MHz SW 200A 140 450 MHz SW 200B in range of 0 20 200W full scale for base station use SW 200A 200B ll SW 100A 100B SWR POWER METER Compact and lightweight SWR POWER VOLT meters cover 1 8 150MHz SW 100A 140 450 MHz SW 100B in range of 150W full scale for mobile use SW 100A 100B ll SWT 1 SWT 2 ANTENNA TUNING UNIT The SWT 1 2m band and the SWT 2 70 cm band are an antenna tuning unit designed for use in con junction with an SWR POWER meter to allow effi cient transmission This unit is especially convenient for monitoring SWR using a KENWOOD SWR POWER meter SWT 1 SWT 2 E SWC 4 DIRECTIONAL COUPLER The SWC 4 Directional Coupler is designed for use in conjunction with the SW 200A 200B SWR POWER Meters to cover 1200 1300 MHz The coupler is capable of handling a maximum input of 20 W RC 10 REMOTE CONTROLLER The RC 10 Remote Controller provides the following func
3. 4 4 2 Microprocessor Initialization When you want to erase all programmed data or if the display should show erroneous information you should reset initialize the microprocessor using the following procedure 1 Turn the POWER switch off 2 Press and hold the VFO M and the M IN keys and turn on the POWER switch Zee N m zm 3 Release the VFO M and the M IN keys the M in dicator and the Memory Channel Number will display for approximately 5 seconds after you release the keys 4 4 3 Memory Channel This transceiver provides 14 Memory Channels 0 9 A d In addition to serving as a normal memory channel some of the Memory Channels serve a dual purpose to specify other parameters The functions of these Memory Channels are described below Memory Channel 1 is used to store the frequen for the Priority Alert function TM 221ES 421ES only Memory Channel A is used to store the lower limit for the Programmable Band Scan function Memory Channel b is used to store the upper limit for the Programmable Band Scan function Memory Channels C and d are used to store odd Split repeater data 4 4 4 Memory Channel Contents The following data can be stored in each Memory Channel Model Memory Channel Contents Frequency TM 221A SHIFT status TM 321A REV status TM 421A TONE status TM 521A Tone Frequency CTCSS status and Tone Frequency 221 5 Frequency 421 5 SHIFT status TM 521E R
4. Sensitivity 12 dB SINAD Less than 0 16 MM 6 dB More than 12 kHz 8 Selectivity 60 dB Less than 26 kHz Less than 36 kHz Spurious response Better than 70 dB Better than 65 dB Better than 40 dB Squelch sensitivity Less than 0 1 pV Output 596 distortion More than 2 W across 8 ohms load External speaker impedance 8 ohms Notes 1 Circuit and ratings are subject to change without 2 Recommended duty cycle notice due to advancements in technology 1 minute Transmission 3 minutes Reception 4 2 2 ACCESSORIES Please unpack your new transceiver carefully and confirm that the accessories listed below are included in the box If any of the items is missing contact the dealer where the radio was purchased D MC 48B DTMF Microphone U S A version only T91 0359 05 2 Dynamic Microphone Except U S A version T91 0365 15 8 Microphone Hook U S A version only 20 0319 24 4 Self tapping Screw U S A version only N46 3010 46 Mobile Mounting Kit 8 BA CR Ot seio BENI ERR obl 929 0416 03 6 SEMS Screw NO9 1530 05 7 Self tapping Screw 09 0335 05 RR EQ MERI 9 Stacking Plate TM 421 521 series and TM 321A only 21 4147 14 TM 221 421 only 0 2111 05 10 DC Power Cable TM 521 321A only 0 2053 06 Q Spare Fuse 10A TM 221 421 series
5. a Antenna location selection Since ignition noise is generated by the vehicles engine the antenna must be installed as far from the engine as possible b Bonding The component parts of motor vehicles such as the engine transmission muffler system ac celerator etc are coupled to one another at DC and low frequencies but are isolated at high fre quencies By connecting these parts using heavy braided ground straps ignition noise can be reduced This connection is called bonding c Use ignition suppressor cable or suppressor spark plugs Noise can be reduced by using spark plugs with internal resistors or resistive suppressor ignition cable 8 2 2 Battery Capacity The power system of a motor vehicle is comprised of a battery and an alternator which generates power while the engine is running to supply current to loads or to charge the battery Since the transceiver draws high current during transmit care should be exercised so the power system is not overloaded When using the transciever the following points should be observed from the viewpoint of battery maintenance a Turn the transceiver OFF when the lights heater wipers and other high draw accessories are used b Avoid transceiver operation when the engine is not running c If necessary use an ammeter and or a voltmeter to check battery condition Model TM 221A 221ES 321A 421A 421ES 521A 521E Serial No Date of Purchase D
6. 1 Press the VFO M key to select the Memory Channel mode 2 Select the Memory Channel that you want to skip using the TUNING control or the UP DWN switches 3 Press the M IN key and then the SCAN key Whenever the M IN key is pressed the M in dicator will turn on You must complete the desired action within 5 seconds or the M in dicator will turn off If the indicator goes off you must press the M IN key again A star will appear to the left of the Memory Channel Number This indicates the Memory Channel will be skipped during scan operations 4 To cancel the Memory Channel Lockout press the M IN key and then the SCAN key 4 5 6 Priority Alert TM 221ES 421ES only Memory Channel 1 will be checked at approximately 5 second intervals to check for activity If the fre quency is occupied a beep will sound If the audio confirmation function has been turned off no beep will sound even if Memory Channel 1 is busy Pressing the ALERT key will switch this function off and on Note The alert function will not work when the RC 10 is connected to the TM 221ES 421ES 4 6 REPEATER 4 6 1 Transmitter Offsets All amateur radio repeaters utilize a separate receiver and transmitter section The receiver frequency may be either above or below the transmitter frequency For most repeater s offsets are as follows TRANSMITTER OFFSET FREQUENCY This transceiver allows you to store the frequency and offset direction in Memor
7. 421ES only This switch is used to activate the priority alert func tion See Section 4 5 6 Priority Alert for additional information on this function 6 ALT key TM 521E only This key is used to activate the Automatic Lock Tun ing system See Section 4 2 4 for additional infor mation on this key 7 TONE key Activates the tone circuit for repeater control This key is also used to open the squelch of a distant sta tion who has activated its CTCSS key Refer to Sec tions 4 6 REPEATER and 4 8 TONE SQUELCH CTCSS for additional information on this control 2 Display Panel With the TM 221A 321A 421A 521A Note The TM 221A Display Panel is used for illustration purposes 40 SERF With the TM 221ES 421ES 521E Note The TM 221ES Display Panel is used for illustration purposes With the TM 521 series Note The TM 521 Display Panel is used for illustration purposes 2 0 8 sk Su TONE x D SHIFT indicator Turns on during repeater offset operations See Sec tion 4 6 REPEATER for additional information on this indicator 2 REV Reverse indicator Turns on when the reverse function has been selected 8 AL Alert indicator TM 221ES 421ES only Turns on when the alert function has been selected amp SCAN indicator Turns on to indicate the scan function has been selected 8 CTCSS Continuous Tone Coded Squelch System indicator TM 221A 321A 421A 5
8. PS 430 PS 50 HEAVY DUTY DC POWER SUPPLY May be used with the TM 221 421 521 series and TM 321A for stable operation PS 50 SP 430 EXTERNAL SPEAKER The SP 430 is an attractive compact external speaker This low distortion speaker provides clear reproduction of the high quality audio obtained from the transceiver SP 430 SP 50B MOBILE SPEAKER 8 ohms Compact and smart high quality external speaker provides flexibility of installation for maximum con venience KENWOOD itti SP 50B SP 41 MOBILE SPEAKER 4 ohms SP 41 21 MC 85 MICROPHONE 8 pin The MC 85 is a unidirectional high class electret condenser microphone provided with the output selective switch audio level compensation circuit low cut filter level meter PTT and LOCK switches MC 80 MICROPHONE 8 pin The MC 80 is an omnidirectional electret condenser microphone provided with UP DOWN switches volume adjustment for output level PTT and LOCK switches built in pre amplifier j z E MC 60A MICROPHONE 8 pin The zinc die cast base provides high stability and the MC 60A is complete with PTT and LOCK switches UP DOWN switches and impedance selector switch and a built in pre amplifier MC 60A 22 MC 55 MOBILE MICROPHONE 8 pin The MC 55 provides UP DOWN switches LED display for switching transmit or receive adjustable microphone gain automatic receive returning circuit approx 5 minutes and many functions
9. TUNING control Available CTCSS Tone Frequencies Hz Hz Hz 67 0 114 8 192 8 71 9 118 8 203 5 74 4 123 0 210 7 77 0 127 3 218 1 79 7 131 8 225 7 82 5 136 5 233 6 85 4 141 3 241 8 88 5 146 2 250 3 91 5 151 4 94 8 156 7 97 4 162 2 100 0 167 9 103 5 173 8 107 2 179 9 110 9 186 2 3 Press any key or the PTT switch on the microphone to return to the receiver frequency display A tone will be transmitted whenever the PTT switch is depressed 4 8 TONE SQUELCH CTCSS TM 221A 321A 421A 521A only 4 8 1 Tone Squelch Operation Initiated by the Dis tant Station Note This function requires the use of the optional TSU 5 Programmable Tone Decoder Unit This function allows you to remain squelched until the proper Tone Frequency is received If you are on a busy repeater this can be quite an aid 1 Press the CTCSS key The CTCSS indicator will light in the Display Panel 2 Your radio will now remain squelched until the proper code is received You should ensure all the stations you wish to communicate with use the same Tone Frequency Please note that the 97 4 Hz Tone does not function for decode pur poses Please see Section 4 7 TONE FREQUEN CY SELECTION for programming the CTCSS Tone Frequency 3 To release the Tone Squelch function normal noise activated squelch press the CTCSS key again The CTCSS indicator should go out on the Display Panel 4 8 2 To Open the Tone Squelch of a Distant Sta tion Even
10. VFO M key to select the Memory Channel mode 2 Select the desired Memory Channel If an Odd Split Memory Channel C or d is selected only the receive data will be transferred 3 Press the M IN key and then the VFO M key to transfer the data 14 4 b SCAN The following scan options are available Programmable Band Scan VFO mode Memory Channel Scan Memory Channel mode 4 5 1 Programmable Band Scan The scan frequency range is determined by the fre quencies stored in Memory Channels A and b The frequency stored in Memory Channel A must be lower than the frequency stored in Memory Channel b for Programmable Band Scan to function properly If the frequency in Memory Channel A is equal to or greater than the frequency stored in Memory Chan nel b scan will proceed over the entire tuning range of the radio Lowest Highest Operating Frequency entered in Frequency entered Operating Frequency Memory Channel A Memory Channel b Frequency 4 k radio scans this frequency Lowest Highest Operating Frequency entered in Frequency entered Operating Frequency Memory Channel b Memory Channel A Frequency k The radio scans this frequency range Lowest Highest Operating Same frequencies are entered in Operating Frequency both Memory Channels A and b Frequency 4 The radio scans this frequency range 1 Before pressing the SCAN key adjust the SOL con
11. from the walls Choose a location that is relatively free from vibra tion Cleaning Do not use volatile solvents such as alcohol paint thinner gasoline benzine etc to clean the cabinet Use a silicone cloth or a clean dry cloth C Silicone Silicone cloth Thinner Benzine 2 SPECIFICATIONS AND ACCESSORIES 2 1 SPECIFICATIONS TM 221A TM 221ES 321 TM 421A TM 421ES TM 521A TM 521E Specifications Frequency range 148 Mhz 146 MHz 226 MHe 1240 to 1300 MHz Mode F3E FM Antenna impedance 50 ohms Operating temperature 20 C to 60 C 4 F to 140 F Power requirement 13 8 VDC 15 Grounding Negative 5 anata mode 9 5 A 6 5 A 8 5 A 5 5 Current Max drain i 04A 05A Frequency stability Better than 2 10x 1075 Better than 3 107 Wide 141 mm 5 9 16 Dimensions High 42 mm 1 21 32 Deep 193 mm 7 19 32 Weight 1 2 kg 2 65 Ibs HI 45W 25w 35 10 W Output power Approx 5 Approx 5 W Approx 1 W LOW Acarane up to out Adjustable up to out 20 W up to out t Modulation Reactance modulation 2 Spurious radiation Less than 60 dB Less than 50 dB E Max frequency deviation 5 kHz Audio distortion at 60 Less than 3 modulation Microphone impedance 500 to 600 ohms Circuitry Double conversion superheterodyne Intermediate 1st 10 695 MHz 10 7 MHz 30825 4 21 6 MHz 59 7 MHz frequency 2nd 455 kHz 5
12. involved Also include your telephone number You need not return ac cessory items unless directly related to the service problem Service note Dear OM if you desire to correspond on a technical or operational problem please make your note short complete and to the point and PLEASE make it readable 5 4 IN CASE OF DIFFICULTY 5 4 1 Receive Please list Model and Serial Number The problem you are having Please give sufficient detail to diagnose Information such as other equipment in the station meter readings and anything else you feel might be useful in attempting diagnosis Caution Do not pack the equipment in crushed newspapers for shipment Extensive damage may result during shipment Notes 1 When claiming warranty service please include a photocopy of the bill of sale or other proof of purchase showing the date of sale must accom pany the radio 2 Record the Date of Purchase Serial Number and Dealer from whom purchased 3 For your own information retain a written record of any maintenance performed on the unit 5 3 CLEANING The knobs front panel and cabinet of the transceiver are likely to become soiled after extended use The knobs should be removed from the transceiver and cleaned with a neutral soap and warm water Use a neutral soap no harsh chemicals and a damp cloth to clean the cabinet and front panel SYMPTOM PROBABLE CAUSE ACTION Indicator does not light and data is n
13. 1 1 2 20 FO5 1031 05 1 Spare Fuse TM 321A TM 521 series only FO5 8021 05 Instruction Manual B50 8221 XX MM Warranty ld IRET ede ped RR UTE ES Ja j AFTER UNPACKING Shipping container Save the boxes and packing in the event your unit needs to be transported for remote operation maintenance or service 3 INSTALLATION AND CONNECTION Warning Never apply AC power to the DC Power Supply until all installation and connections have been com pleted 3 1 INSTALLATION Cautions 1 Do not place the unit in an area that is exposed to direct sunlight or near a heater etc 2 Do not store or use the unit in a dusty location or in a moist atmosphere Select a well ventilated location 3 To maintain good ventilation Remove all packing materials Do not cover the unit Place the unit at least 10 cm 4 away from the walls 3 1 1 Mounting Bracket Installation Mobile Warning Consider ease of operation and safety when select ing the location for the Mounting Bracket The following tools are required for installing the Mounting Bracket 1 6 drill for Self tapping Screws No 2 Philips Screw Driver 1 Select a location in which to install the Mounting Bracket 2 Use the Mounting Bracket as a template to locate the holes and mark four points to be drill ed Mark four points 3 Drill four h
14. 21A only Turns on to indicate the CTCSS function is active 6 TONE indicator Excludes TM 221ES 421ES European versions and TM 521E Turns on to indicate the tone function is active 2 M Memory In indicator On whenever the M IN key has been depressed Memory Channel Number display Indicates the selected Memory Channel Number 9 indicator The x indicator indicates the Memory Channel cur rently in the display will be skipped during Memory Channel scan 40 ON AIR indicator On during transmit operations 04 S amp RF meter This level meter indicates the relative receive input signal strength or transmitter RF output During low power operations this meter functions as a microphone input level meter to check for proper microphone operation 2 BUSY indicator On whenever the squelch is open 3 Frequency display Displays the transmit receive frequency Frequency Step or Tone Frequency TM 221A 321A 421A 521A only 49 ALT and Direction indicators TM 521 series only ALT indicator Turns on to indicate the Auto Lock Tuning function has been selected Direction indicator When the ALT system is operating the Direction in dicator will turn on if the system shifts the receiver frequency Please refer to Section 4 2 4 ALT System for addi tional information 4 1 2 Rear Panel D ANT Antenna connector Attach an antenna with an impedance of 50 ohms to this connector 2 SP Speaker jack T
15. COCO AN3P 144MHz FM TRANSCEIVER TM 221A TM 221ES 220MHz FM TRANSCEIVER M 321A 430MHz FM TRANSCEIVER IM 421A TM 421ES 440MHz FM TRANSCEIVER Lud 1200MHz FM TRANSCEIVER TM 521A TM 521E INSTRUCTION MANUAL KENWOOD CORPORATION Thank you for purchasing the new transceiver This unit has been carefully engineered and manufac tured to rigid quality standards and should give you satisfactory and dependable operation for many years IMPORTANT 1 Please read this Instruction Manual carefully before placing your transceiver in service 2 Save this Instruction Manual This Instruction Manual covers the following models TM 221A 144 MHz FM transceiver 45W U S A and general markets TM 221ES 144 MHz FM transceiver 45W U K and European markets TM 321A 220 MHz FM transceiver 25W U S A only TM 421A 430 MHz FM transceiver 35W General markets TM 421A 440 MHz FM transceiver 35W U S A only TM 421ES 430 MHz FM transceiver 35W U K and European markets TM 521A 1200 MHz FM transceiver 10W U S A only TM 521E 1200 MHz FM transceiver 10W European market When there are differences in operation separate instructions will be given for each model Illustrations show the TM 221A The following explicit definitions apply in this manual Warning Risk of fire or electric shock may occur Do not disregard Caution Equipment damage may occur but not personal i
16. EV status 4 4 5 Memory Entry 1 Memory Channels 0 9 A and b Simplex Stan dard Offsets 1 Press the VFO M key to select the VFO mode 2 Select the desired operating frequency and shift 3 Select the CTCSS key if tone squelch is desired TM 221A 321A 421A 521A only 4 Press the TONE key if required European ver sion excluded 5 Select the desired Tone Frequency See Section 4 7 TONE FREQUENCY SELECTION If CTCSS Tone Squelch has been selected the tone func tion will be automatically activated TM 221A 321A 421A 521A only 6 Press the M IN key The Memory Channel Number display will light 7 Select the desired Memory Channel using the TUNING control or the microphone UP DWN switches You must do this within 5 seconds of pressing the M IN key Step 6 or the M in dicator will turn off If the indicator goes off you must press the M IN key again 8 Press the M IN key within 5 seconds of selecting the Memory Channel If the indicator goes off you must press the M IN key again in order to complete the desired function 2 Odd Split Memory Channels C and d 1 Enter the desired receiver frequency as describ ed in Section 4 4 5 1 above in Memory Chan nel C or d 2 Select the desired transmitter frequency using the TUNING control or the microphone UP DWN switches 3 Press the M IN key to complete the operation 4 4 6 Memory Shift Transferring Data from Memory Channel to the VFO 1 Press the
17. application Transceiver performance depends largely on the Yagi antennas Ground plane antenna Antenna array _ Rotor control cable 8 1 2 Mobile Various types of antennas for UHF VHF mobile operation are available Please consult your dealer for information on these antennas Note For gutter mount installation the antenna bracket must be grounded to the car body as shown below Attach the antenna securely referring to the antenna installation instructions provided with the antenna Front fender Trunk lid system Installation for mobile operation 30 Pass through the rear window type of antenna used For fixed station operation there are ground plane antennas omnidirectional and Yagi antennas unidirectional The Yagi antenna is suitable for DX Long distance operation or com munication with a specific party Antenna Antenna Antenna bracket Remove the paint to insure grounding to the car body Pass through the door fitting The cable can be inserted easily if the door cushion is soft Note that rain water may enter along the cable Lift the trim plate and install the cable Coax cable routing 8 2 MOBILE INSTALLATION HINTS 8 2 1 Noise Reduction In motor vehicles noise is generated by the ignition system Other sources of noise include the wiper and heater motors It is imperative that some preventive measures be taken to reduce the noise to the lowest possible level
18. art is located Part number and name if known and quantity desired Part numbers for most replacement parts is contain ed in the service manual available as an option from your dealer 5 8 ADJUSTMENTS 5 8 1 Cover Removal Caution 1 Before removing the top cover turn the power supply and radio POWER switches off and disconnect the Power Cable 2 Do not pinch wiring when closing the cover Loosen the four screws on both the right and left sides 2 Remove the four screws attaching the top cover Remove the top cover and set aside 3 Reverse steps 1 and 2 to reassemble the radio 5 8 2 Low Power Output Adjust VR7 on PC board to adjust the output of the transceiver in the low power position The adjust ment range is 1 to 30 watts on the TM 221 series 1 to 20 watts on the TM 321A and TM 421 series and 0 5 to 5 watts on the TM 521 series 5 8 3 Microphone Gain Adjust VR3 on PC board to the desired level Caution Too much microphone gain can cause reports of audio distortion 6 OPTIONAL ACCESSORIES Note Some optional accessories may not be available in your area 6 1 TSU 5 PROGRAMMABLE TONE DECODER UNIT TM 221A 321A 421A 521A only Caution 1 Before removing the top cover turn the power supply and radio POWER switches off and disconnect the Power Cable 2 Do not pinch wiring when closing the cover Installation Loosen the four screws on both the right and left sides 2 Remove the
19. ealer KENWOOD CORPORATION Shionogi Shibuya Building 17 5 2 chome Shibuya Shibuya ku Tokyo 150 Japan KENWOOD U S A CORPORATION PO BOX 22745 2201 East Dominguez St Long Beach CA 90801 5745 U S A KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembr cker Str 15 6056 Heusenstamm West Germany KENWOOD ELECTRONICS BENELUX NV Mechelsesteenweg 418 B 1930 Zaventem Belgium KENWOOD ELECTRONICS AUSTRALIA PTY LTD INCORPORATED IN N SW 4E Woodcock Place Lane Cove N SW 2066 Australia 31 KENWOOD
20. eater than 3 to 1 Note High SWR values will cause the transmitter output to drop and may lead to TVI or BCI reports 4 OPERATION Warning 1 When operating this transceiver mobile please drive safely 2 Remove all packing materials before operating this transceiver Note An internal heterodyne tone resulting from internal mixing may be en countered at 1244 150 MHz and 1245 050 MHz TM 521A E only 4 1 CONTROL FUNCTIONS Note 4 1 1 Front Panel The TM 221A front parl is used for illustration purposes o 9 VFO M Lr SCAN CTCSS TONE conn d LI t 7 arm D VFO M VFO Memory Channel key This key is used to switch between the VFO and Memory Channel modes 2 M IN Memory In key This key is used to enter a frequency offset etc in to the desired Memory Channel The key is used dur ing VFO operations only When this key is pressed during memory operations the contents of the memory are transferred to the VFO and switch the set back to the VFO mode This key is also used when programming the offset offset frequency tone frequency TM 221A 321A 421A 521A only and CTCSS decode TM 221A 321A 421A 521A only and operating the ALT Auto Lock Tuning system TM 5214 only 8 MHz key Used to change frequencies rapidly During VFO operations pressing this key will cause the kHz digits to disappear from the display Rotating the TUNING contro
21. el Selec tion The desired operating frequency and the Memory Channel may be selected by using either the TUNING control or the microphone UP DWN switches Press the VFO M key to alternate between the VFO and the Memory Channel modes 4 2 3 Frequency Step Selection The frequency step can be selected by using the following procedure 1 Press the VFO M key to select the VFO mode 2 Press the M IN key and then the REV key Whenever the M IN key is pressed the M in dicator will turn on You must complete the desired action within 5 seconds or the M in dicator will turn off If the indicator goes off you must press the M IN key again 3 Select the desired frequency step using the TUN ING control or the microphone UP DWN switches The figure below shows how the TUN ING control and UP DWN switches will increase or decrease in size Turn the TUNING control Turn the TUNING control counterclockwise or press clockwise or press the the microphone UP switch microphone DWN switch lt gt With the TM 221A 25kHz 5kHz 10kHz 20kHz 15kHz With the TM 221ES 25kHz 12 5kHz 5kHz 20kHz 15kHz 10kHz With the TM 321A 15kHz 20kHz 25kHz 10kHz 5kHz With the TM 421 series 20kHz 25kHz 12 5kHz 15kHz 10kHz 5kHz With the TM 521 series 25kHz 12 5kHz 1OkHz 20kHz 4 To return to the normal receive frequency press any key except the LOW the POWER Switches or turn the TUNING control 4 2 4 ALT Auto Lock Tuning System TM 521 s
22. enient to have to reprogram the radio each time if you were in range of both repeaters The REV key has been provided to allow you to reverse the transmit and receive frequencies To use the Reverse function press the REV key The REV indicator will light in the Display Panel to remind you that you are working a reverse repeater pair To return to normal offsets press the REV key again This function is also useful to check the input fre quency of the repeater so that you can determine if you are within simplex communications range With the TM 221ES 421ES 521E Transmission is inhibited when the REV key is engaged 4 6 4 Tone Operations Some repeaters require the use of a control signal to activate the repeater Several versions are currently in use worldwide With the TM 221A 321A 421A 521A Subaudible tones are sometimes used In the United States 38 different subaudible tone frequency selec tions are possible See Section 4 7 TONE FRE QUENCY SELECTION With the TM 221ES 421ES 521E In Europe a 1750 Hz tone is used in transmit Press the TONE key to transmit the access tone then press the PTT switch In the United Kingdom a 1750 Hz tone burst at the beginning of each transmission is used Since use of this tone is required in the Europe and the United Kingdom an 1750 Hz tone encoder is in cluded as standard equipment 4 6 5 Autopatch U S A only Some repeaters offer a service known as autopatch This allo
23. eries only The ALT system operates similar to an Automatic Frequency Control system This system is useful when the frequency of either station starts to drift When this occurs distortion of the signal is the usual result The ALT system will correct for this apparent drift 12 Example Frequency Transmit Frequency Receive Frequency of the Distant Station ALT System is performed Frequency Transmit Frequency Receive Frequency of the Distant Station Note The frequency display will not change even though the receive frequency might shift in order to properly tune the incoming signal When the ALT system is operating the Direction indicator will turn on if the system shifts the receiver frequency The Direction indicator will show you if the incoming signal was higher or lower than the displayed frequency Turns on when the transmit frequency of the distant sta tion is higher than your receive frequency a mo mm i i ALILI 000000000000 SARF 1 3 5 1 OVER Turns on when the transmit frequency of the distant sta tion is lower than your receive frequency To utilize this feature With the TM 521A 1 Press the M IN key The M indicator will turn on for 5 seconds 2 While the M indicator is on press the SHIFT key If you do not press the SHIFT key while the M in dicator is on you will have to start over at step one The ALT indicator will turn on and the receiver will au
24. four screws attaching the top cover Remove the top cover and set aside Temporarily set the speaker aside Remove the jumper as shown in the illustration Connect the 7 pin connector to the TSU 5 as shown in the accompanying illustration 6 Install the TSU 5 using the two screws provided 7 Route the 2 pin connector attached to the TSU 5 as shown in the accompanying illustra tion and attach it to the same plug that the jumper wire was removed from in step 3 8 Replace the speaker Make sure that the chassis fits in the guides on the back of the speaker assembly 9 Attach the top cover using four screws 10 Tighten the four side screws ES 6 2 435 HAND MICROPHONE 8 Caution Some of the early versions of the MC 43S UP DWN Microphone were delivered with a wire connected between the microphone hook and pin number 6 six of the microphone connector This wire is used on some foreign transceivers and must be disconnected before the microphone can be used with the TM 221 421 521 series and TM 321A radios If you connect this microphone to the TM 221 421 521 series and TM 321A before checking for this wire there is a possibility that you may experience erratic display or operation of the TM 221 421 521 series and TM 321A by static discharge 20 Remove the jumper 6 3 OTHER ACCESSORIES PS 430 DC POWER SUPPLY May be used with the TM 221 421 521 series and TM 321A for stable operation
25. his jack is for connection of an 8 ohm external Speaker 8 Fuse holder Contains one of the following fuses TM 221 421 series 10A TM 321A and TM 521 series 8A 13 8 VDC power input connector Connect the supplied DC Power Cable to this con nector Pay close attention to the polarity the DC Power Cable is color coded red is positive and black is negative when connecting the cable to the power source 4 1 3 Microphone 9 TM 221A 321A 421A 521A U S A version only D 2 UP DWN Up Down switches These switches are used to step the VFO frequency or Memory Channel up and down The frequency will change continuously if the switches are pressed and held 8 PTT Push To Talk switch The transceiver will be placed into transmit whenever this switch is pressed Operations such as scanning will be cleared when this switch is pressed 4 16 Tone DTMF Keypad U S A version only Used to activate the DTMF encoder See Section 4 6 REPEATER for additional information on this item 4 2 RECEPTION 4 2 1 Initial Control Settings 2 Turn on the DC power supply and then press the 1 Connect the power supply and antenna and then POWER switch on the radio the display will in set the witches and controls as follows dicate a frequency 3 Adjust the VOL control clockwise until a signal POWER switch OFF or noise is heard POWER switch of the DC power supply 4 Rotate the TUNING control and select an open Fixed Statio
26. if the optional TSU 5 Programmable Tone Decoder Unit is not installed your radio can open the Tone Squelch of a distant station 1 Press the CTCSS key The CTCSS indicator will light in the Display Panel 2 Select the same Tone Frequency between the stations you wish to communicate See Section 4 7 TONE FREQUENCY SELECTION Press the microphone PTT switch To release the Tone Squelch function press the CTCSS key again The CTCSS indicator should go out on the Display Panel B 5 MAINTENANCE AND ADJUSTMENT 5 1 GENERAL INFORMATION Your transceiver has been factory aligned and tested to specification before shipment Under normal cir cumstances the transceiver will operate in accord ance with these operating instructions All ad justable trimmers and coils in your transceiver were preset at the factory and should only be readjusted by a qualified technician with proper test equipment Attempting service or alignment without factory authorization can void the transceiver s warranty When operated properly the transceiver will provide many years of service without requiring realignment The information in this section gives some general service procedures which can be accomplished without sophisticated test equipment 5 2 SERVICE Should it ever become necessary to return the equip ment to your dealer or service center for repair pack it in its original box and packing and include a full description of the problems
27. ion Keys on page 9 0 TUNING VFO control This control is used to select the desired transmit receive frequency Memory Channel Frequency Step Tone Frequency TM 221A 321A 421A 521A only and Scan Direction 1 Function Keys With the TM 221A 321A 421A 521A 0 SHIFT SCAN CTCSS TONE With the 221 5 421 5 SHIFT REV SCAN ALERT TONE With the TM 521E o Q oa pr e D SHIFT key The SHIFT key is used to select the desired transmit ter offset during repeater operations When the key is pressed the shift modes cycle from to to European version to simplex no indicator See Section 4 6 REPEATER 2 REV Reverse key When the REV key is depressed it is used to reverse the transmit receive frequencies during repeater operations With the TM 221A 321A 421A 521A This will allow you to check the input of the repeater or to operate on a reverse repeater pair With the TM 221ES 421ES 521E This will allow you to check the input of the repeater Transmission is inhibited when the REVERSE key is engaged 8 SCAN key Press the SCAN key to initiate scanning press again to cancel scan For additional information on this function refer to Section 4 5 SCAN CTCSS Continuous Tone Coded Squelch System key TM 221A 321A 421A 521A only Refer to Section 4 8 TONE SQUELCH CTCSS for additional information on this key 5 ALERT key TM 221ES
28. itry Notes 1 When the lithium battery is replaced the microprocessor must be reset using the pro cedure in Section 4 4 2 2 When the lithium battery fails the radio s microcoded functions are not affected Only in formation stored in memory will be cleared 5 6 FUSE REPLACEMENT If the fuse blows DISCONNECT the AC Power Cable and replace with the specified fuse only after determining the cause or contact either your KENWOOD dealer or the factory to repair the cause Warning 1 Never connect the AC cable to the AC outlet un til fuse replacement has been made 2 Never use a large amperage fuse Replace with a new fuse of the same rating This transceiver is equipped with the fuse s listed below If the fuse blows determine the cause before replacing the defective fuse Replacement fuses are available from your authorized KENWOOD dealer Part Number Q ty FO5 1031 05 10 A for TM 221 421 series only Fuse Location 13 8 VDC Power F05 8021 05 8 A 1 ea ipot Cable for TM 321A and TM 521 series only DC Power Cable F05 2036 05 20 A 2 ea Transceiver Rear Panel Red 20A Black So 20A Power Cable Power Input Connector Battery 5 7 ORDERING SPARE PARTS When ordering replacement or spare parts for your equipment be sure to specify the following Model and serial number of your transceiver Schematic number of the part Printed circuit board number on which the p
29. l will then change the frequency in 1 MHz steps This function will be released by pressing any key or microphone PTT switch except the LOW HI LOW and POWER switches This function is also canceled 5 seconds after the last input from the TUNING con trol 4 Display Panel The LCD displays operation information such as transmit receive frequencies memory channel infor mation offset tone frequency etc See page 9 for additional information 8 VOL Volume control Turn the control clockwise to increase the volume and turn the control counterclockwise to decrease the volume LOW HI LOW switch This switch is used to select the desired transmitter output power level 7 POWER switch Press to turn on Press again to turn off MICROPHONE connector Plug the standard or optional microphone into this jack 8 GND PTT 1 Microphone _ 7 GND Microphone audio 2 PTT STBY 6 RX detector output Switch 7 Approx 100 mV 10 kQ 8 DOWN 5 8 15 mA Front view 9 SQL Squelch control The SQL control is used to eliminate noise during no signal periods Normally this control is adjusted clockwise until the noise just disappears and the BUSY indicator goes off Threshold level For scan operations this control must be set to the threshold point When an incoming signal is weak or unstable readjust the SQL control for optimum reception 10 Function keys See Section 1 Funct
30. n OFF channel Then turn the SQL control clockwise VOL control Fully counterclockwise until the noise just disappears SQL control Fully counterclockwise 5 Select the desired frequency using the TUNING control or UP DWN switches on the microphone See Section 4 2 2 Frequency and Memory Channel Selection If a signal is received the BUSY indicator will turn on and the S meter will deflect To turn off the transceiver turn off the WG ea Z transceiver s POWER switch before you turn off t H IL oi the power supply or if in a vehicle before you 2555555800001 um stop the engine Fully counterclockwise OFF wow wm wm KENWOOD TRANSCEIVER TM2214 iow rol 6 T REV SCAN CTCSS TONE Fully counterclockwise Note The TM 221A front panel is used for illustration purposes Note the initial factory delivered settings for Fre quency Tone Frequency Memory Channel and Frequency Step are shown in the accompanying table TM 221A TM 221ES TM 321A TM 421A TM 421ES TM 521A TM 521E 440 000 MHz VFO Frequency 144 000 MHz 220 000 MHz U S A version 430 000 MHz 1240 000 MHz 430 000 MHz Frequency Step 5 kHz 12 5 kHz 20 kHz 25 kHz Memory Channel Memory Channel 440 000 MHz Memory Channel 144 000 MHz 220 000 MHz U S A 430 000 MHz 1240 000 MHz 430 000 MHz Tone Frequency 88 5 Hz 88 5 Hz 88 5 Hz 4 2 2 Frequency and Memory Chann
31. njury Note If disregarded inconvenience only no risk of equipment damage or personal injury TM 221ES 421ES MODEL IDENTIFICATION NOTES Please note that these model numbers do not appear on the front panel of the radio It will appear on the Model Number Plate on the bottom of the radio and on the shipping box The front panel will only say TM 221E or TM 421E CONTENTS 1 lt 2 SPECIFICATIONS AND ACCESSORIES 2 1 SPECIFICATIONS 2 2 ACCESSORIES 3 INSTALLATION AND CONNECTION 3 1 INSTALLATION 9 2 CONNECTIONS irrisa os rtr see petere 4 1 CONTROL FUNCTIONS 4 2 RECEPTION 4 3 TRANSMISSION 4 4 MEMORY SCAN quests ponit vade ME 4 REPEATER 4 7 FREQUENCY SELECTION 4 8 TONE SQUELCH CTCSS 5 MAINTENANCE AND ADJUSTMENT 5 1 GENERAL INFORMATION 5 2 5 3 5 4 e 5 5 MICROPROCESSOR BACKUP LITHIUM BATTERY REPLACEMENT 19 5 6 FUSE REPLACEMENT 5 7 ORDERING SPARE PARTS 5 8 ADJUSTMENTS si 6 OPTIONAL ACCESSORIES 20 6 1 TSU 5 PROGRAMMABLE TONE DEGCODER UNIT coria rte 6 2 435 HAND MICROPHONE 6 3 OTHER ACCESSORIES 7 BLOCK DIAGRAM AND CIRCUIT DIAGRAM 751 BLOCK DIAGRAM ores esti 7 2 CIRCUIT DIAGRAM 8 REFERENCE
32. oles as marked using a 1 6 drill for Self tapping Screws 4 Install the Mounting Bracket using the supplied Self tapping Screws 4 pcs and Flat Washers 4 pcs Mounting Bracket Flat Washer Self tapping Screw Self tapping Screw Mounting Bracket 5 Attach the transceiver temporarily using the SEMS Screws 4 pcs Mounting Bracket SEMS Screw Transceiver 6 The angle of the Mounting Bracket may be ad justed to any of five 5 possible viewing angles Select the desired angle 7 Hold the transceiver in place and tighten the four 4 SEMS Screws using a wrench or screw driver Warning Make sure that the transceiver will not slip out of place while operating the vehicle 3 1 2 Stacking Plate TM 321A and TM 421 521 series only To stack the TM 321A TM 421 series and or TM 521 series with the TM 221 series connect them with the supplied Stacking Plate Only one Mounting Bracket will be required so save the other Mounting Bracket and mounting hardware for future use Select the lower pair of mounting holes on the bracket as shown in the accompanying diagram when securing the lower radio Stacking Plate 3 2 CONNECTIONS Cautions 1 Before connecting or disconnect ing the DC Power Cable be sure to turn off the POWER switches of both the transceiver and the DC Power Supply Observe polarity of the DC Power Cable The transceiver Red Make sure the positive and negative lead polarit
33. ot displayed when POWER switch is pressed 2 Fuse is blown 1 Wrong power polarity 1 Connect red to and black to 2 Replace with the specified fuse after repairing the cause For the fuse rating see Sections 5 6 Display is dark Power voltage is low Check voltage for 13 8 VDC 1 596 No sound from the speaker No signal can be received 1 VOL control is turned too far counterclockwise 2 Squelch is closed 3 PTT switch of microphone is pressed setting the unit in the transmit mode 4 CTCSS is operating 1 Turn the VOL control 2 Turn the SQL control counterclock wise 3 Turn PTT switch off 4 Press the CTCSS key Scan fails Improper scan control setting such as SQL control adjustment See Section 4 5 Memory can not be backed up Backup battery voltage is low See Section 5 5 5 4 2 Transmit SYMPTOM PROBABLE CAUSE ACTION No output Microphone jack is not plugged in 2 Poor antenna connection 1 Plug jack in 2 Connect antenna securely Can not access to repeater 1 Setting of the TONE SHIFT REV keys are wrong 2 Wrong Tone Frequency is selected 1 Refer to Section 4 6 2 Refer to Section 4 7 5 5 MICROPROCESSOR BACKUP LITHIUM BATTERY REPLACEMENT Lithium battery replacement should be performed by an authorized KENWOOD service facility either your KENWOOD dealer or the factory since this unit con tains CMOS type circu
34. tery terminal 5 Do not remove the fuse even if the power cable 3 If the fuse opens be sure to check that each con is too long ductor has not been damaged by short 2 Ignition Noise 3 2 2 Fixed Station The transceiver has been designed to suppress ignition noise however if excessive noise is present it may be necessary to use suppressor spark plugs with resistors or an external Noise Filter such as the PG 3B Fuse Holders Transceiver PS 430 DC Power Cable To AC power Source To antenna A regulated DC Power Supply 13 8 VDC is re quired The PS 430 and the PS 50 are recommend ed Black Fuse Holders Red Transceiver TT DC Power Cable 3j 3 2 3 Antenna Warning For protection against fire electric shock personal injury or damage to the radio use a lightning ar rester in your antenna lines The type of antenna that is used will greatly affect the performance of the transceiver Use a properly adjusted antenna of good quality to enable your transceiver to perform at its best The antenna input impedance is 50 ohms Use 50 ohm VHF UHF coax ial cable for this connection If the antenna is far from the transceiver the use of low loss coaxial cable is recommended Match the impedance of the coax ial cable and that of the antenna so that the SWR is less than 1 5 to 1 The protection circuit in the transceiver will activate if the SWR is particularly poor gr
35. the M indicator will turn on You must complete the desired action within 5 seconds or the M indicator will turn off If the indicator goes off you must press the M IN key again To restore the confirmation tone press the M IN key and then the CTCSS ALERT key again 4 3 TRANSMISSION Cautions 1 Ensure that an antenna with a low standing wave ratio SWR is attached to the antenna connector before attempting to transmit Failure to provide proper termination may result in damage to the final amplifier section 2 Always check to ensure the frequency is clear before transmitting 1 Select the desired operating frequency using any of the methods described above 2 Check the frequency to see if it is occupied before you transmit 3 Press the microphone PTT switch The ON AIR indicator will light 4 Speak into the microphone The recommended distance to the microphone is 2 inches 5 cm Talking too far away may result in reports of weak audio 5 Release the microphone PTT switch to return to the receive mode The ON AIR indicator should go out 4 4 MEMORY 4 4 1 Microprocessor Reset A lithium battery is contained in the transceiver to re tain memory Turning off the POWER switch disconnecting the power cable or a power failure will not erase memory The battery should last for approximately five years For replacement informa tion please refer to Section 5 5 MICROPROCESSOR BACKUP LITHIUM BATTERY REPLACEMENT
36. tions 1 Direct entry of the desired Transmit Receive Fre quencies using the numeric keypad 2 Transmit Receive Frequency or Memory Channels up or down control 16 key autopatch operation Volume control Squelch on or off control Wheri connected to two transceivers allows duplex communications 7 ALT System operation TM 521 series only For additional information please refer to the In struction Manual provided with the RC 10 RC 10 MB 201 MOBILE MOUNT The mobile mount MB 201 allows easy installation and removal of the TM 221 421 521 series and 321 E 46 EXTENSION CORD May be used with the RC 10 to connect a second transceiver for duplex operation W PG 3B DC LINE NOISE FILTER May be used with the TM 221 421 521 series and TM 3214 to suppress ignition noise W PG 2N EXTRA DC POWER CABLE 23 7 BLOCK DIAGRAM AND CIRCUIT DIAGRAM 7 1 BLOCK DIAGRAM 7 1 1 TM 221 series ss s ad i a 18 Block Diagram is subject to change without notice due to advancements in technology Note 24 CONTROL UNIT X53 3160 XX TX RX UNIT X57 3240 XX Block Diagram is subject to change without notice due to advancements in technology Note 7 1 4 TM 521 series 25 8 REFERENCE 8 1 ANTENNA 8 1 1 Fixed Station Various types of fixed station antennas are commer cially available Select your antenna according to available space and intended
37. tomatically center itself on the in coming signal M IN key M indicator vrom Mjn KENWOOD 20 FM TRANSCEIVER M 521A f 1 _ Mc ie wou aaaoaaaoaaa trt ooo 7 OVER 3 To release the ALT system press the M IN key and then the SHIFT key The ALT and the Direc tion indicators will turn off With the TM 521E 1 Press the ALT key The ALT indicator will turn on and the receiver will automatically center itself on the incoming signal 2 To release the ALT system press the ALT key The ALT and the Direction indicators will turn off ALT operation using the RC 10 Use the following procedure to turn on the ALT func tion with the RC 10 Remote Controller 1 Press the F key The F indicator will turn on for 5 seconds 2 While the F indicator is on press the 1 key If you do not press the 1 key while the F indicator is on you will have to start over at step 1 To release ALT System operation repeat steps 1 and 2 Please refer to the Instruction Manual provid ed with the RC 10 for instructions on programming other RC 10 functions 4 2 5 Confirmation Tones An audible tone will sound whenever the TUNING control is rotated except in the VFO and Memory Channel modes or any keys or the microphone UP DWN switches are depressed If you do not want this audio confirmation press the M IN key and then the CTCSS ALERT with the U K and European ver sions key Whenever the M IN key is pressed
38. trol to the threshold level 2 Determine the desired scan frequency range and enter the frequencies into Memory Channels A and b Press the VFO M key to select the VFO mode Press the SCAN key to initiate scan To clear scanning press any key such as the SCAN key microphone PTT UP DWN switches or rotate the TUNING control except LOW HI LO or POWER switch gr 4 5 2 Memory Channel Scan 1 Press the VFO M key to select the Memory Channel mode 2 Before pressing the SCAN key adjust the SQL control to the threshold level 3 Press the SCAN key to initiate scan 4 To clear scanning press any key such as the SCAN key microphone PTT UP DWN switches or rotate the TUNING control except LOW HI LO or POWER switch 4 5 3 Scan Direction Scanning begins in the direction that corresponds to the direction that the TUNING control was last turn ed or with respect to which of the microphone UP DWN switches was last depressed If you press ed the UP switch before initiating scan scan will pro ceed in a positive direction If the DWN switch was pressed scan will tune down in frequency 4 5 4 Scan Hold The transceiver will stop on a busy channel and then resume after a 5 second delay You must cancel scan operations to remain on the channel 4 5 5 Memory Channel Lockout The Memory Channel Lockout function allows you to temporarily skip unwanted Memory Channels during the Memory Channel Scan mode
39. ws you to dial a telephone number from your radio and carry out a telephone conversation much like a car telephone or cellular telephone This func tion requires the use of a DTMF Dual Tone Multi Fre quency pad In addition to the normal 12 keys that are found on your telephone the MC 48B microphone also provides 4 additional keys A B C and D These keys are required by some repeater systems for various control functions You should check with the control operator of your repeater to determine if their use is required A chart is provided that lists the tones that are generated when you press each key PTT switch DTMF pad 1 To activate the DTMF pad press and hold the PTT switch 2 Now press the keys just as you would dial a telephone 3 The radio will remain keyed for about 2 seconds after you press each number so you can release the PTT switch without unkeying the radio AUDIO TONES 1209 1336 1477 1633 Low Tone Hz 4 7 TONE FREQUENCY SELECTION TM 221A 321A 421A 521A only 1 To select the Tone Frequency press the M IN key and then the TONE key The Display Panel will indicate a Tone Frequency Whenever the M IN key is pressed the M indicator will turn on You must complete the desired action within 5 seconds or the M indicator will turn off If the in dicator goes off you must press the M IN key again 2 Select the desired Tone Frequency using the UP DWN switches on the microphone or the
40. y Channels 0 9 and b or you can select these functions directly from the keyboard With the TM 221A 321A Display E The TM 221A 321A have been programmed accor ding to the standard ARRL Band Plan regarding TM 221 series 600 kHz 600 kHz transmitter offsets Please see the enclosed charts TM 321A 1 6 MHz 1 6 MHz for additional information You can of course over TM 421A 5 MHz 5 MHz ride this by using the SHIFT function if desired European 1 6 MHz 7 6 MHz TM 421ES market U K markei 1 6 MHz 1 6 MHz TM 521A 12 MHz 12 MHz TM 521E 35 MHz 6 MHz With the TM 221A 144 00 145 10 145 50 146 00 146 40 146 60 147 00 147 40 147 60 148 00 MHz S S S S S 5 S Simplex Channel With the TM 321A 220 000 223 940 224 995 MHz Es s s S Simplex Channel 15 4 6 2 Offset Direction To select the desired transmitter offset direction press the SHIFT key Each time you press the key the radio will advance from one offset to the other i e 4 to to with TM 421ES Euro pean version to no offset simplex 4 6 3 Reverse Function Some repeaters utilize a Reverse Pair i e the transmit receive frequencies are exactly the reverse of another repeater For example repeater A uses 146 000 for a transmit frequency OUTPUT and 146 600 for receive INPUT Repeater B uses 146 000 for its receive and 146 600 for its transmit frequency It would be inconv
41. y are correct when wiring to the battery Fuse 20A Fuse 20 ft Engine compartment 4 Passenger compartment To the transceiver DC Power Cable operates on 13 8 VDC negative ground The DC Power Cable is color coded Red Positive polarity Black Negative polarity 3 2 1 Mobile 1 Battery Connections Connect the DC Power Cable directly to the battery terminals Use of the cigarette lighter socket can lead to poor connection and result in poor performance Pay close attention to W if the wiring hole the fire wall or chassis is too small wire through the hole Select the location where the power cable is protected from heat moisture or abrasion Secure the cable Make sure the cable does not directly con tact the edge of the hole by using a grommet Chassis or fire wall disassemble the fuse holder to thread the From passenger compartment Thread like this the polarity of the cables when con necting them to the battery Cautions 1 Before installing the DC Power Cable be sure to remove the negative lead from the battery for circuiting etc Then replace with a new fuse of the same rating safety 4 After completing the wiring wrap the fuse 2 After installation and wiring be sure to double holder with heat resistant tape to protect against check for correct installation before reconnect heat and moisture ing the negative lead to the bat
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