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MAINTENANCE

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Fuse replacement

If a fuse blows or the repeater stops functioning, 

try to fi nd the source of the problem, and replace 

the damaged fuse with a new, rated fuse.

Replace the circuitry fuse as shown below.

WARNING: 

DISCONNECT

 the AC 

power cable and/or DC power cable from 

the repeater. Otherwise, there is danger of 

electric shock and/or equipment damage.

“There are two fuses:

The left fuse, as pictured, is for repeater TX

The right fuse is for repeater RX”

The right fuse is for repeater RX”

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Summary of Contents for CY-F121S

Page 1: ...INSTRUCTION MANUAL VHF FM REPEATER UHF FM REPEATER...

Page 2: ...ult in an electric shock NEVER expose the repeater to rain snow or any liquids AVOID using or placing the repeater in areas with temperatures below 30 C 22 F or above 60 C 140 F Be aware that temperat...

Page 3: ...m A built in backup system supports automatic switching to an external power supply 13 6 V DC if the AC power supply fails Multiple CTCSS DTCS tone memories One CTCSS DTCS tone TX RX tones respectivel...

Page 4: ...port for TX control Microphone ground Microphone input Ground CLI Input port for PC program ming and monitor control VOLUME CONTROL VOLUME Adjusts the audio output level DEALER PROGRAMMABLE KEYS P0 P1...

Page 5: ...nnect the supplied microphone or optional DTMF microphone for SmarTrunk II operation here NEVER connect non specified microphones The pin assignments may be different and the transceiver may be damage...

Page 6: ...E ANTENNA CONNECTOR RX Connects a receive antenna impedance 50 and inputs receiving signals When installing an internal duplexer supplied by third party do not use this connector AC POWER SOCKET AC Co...

Page 7: ...one Enable TX inhibit Set RF Power to LOW2 Go to LMR Common Expert set RX EXO to ON to enable Signal HORN CSQ and PL DPL CABLE CONNECTORS X1 Accessory Connector TX X2 Accessory Connector RX X3 FAN X4...

Page 8: ...5...

Page 9: ...6...

Page 10: ...it 11 TXA TX Transmit Audio TX Unit 12 PTT TX External PTT TX Unit 13 TXD TX Transmit Data Input TX Unit 18 Vcc RX 15V DC Supply for External Controller RX Unit 19 GND RX DC Ground RX Unit 20 Busy RX...

Page 11: ...the transmitting and receiving frequencies Ask your Dealer for details Grounding Topreventelectricalshock televisioninterference TVI broadcast interference BCI and other problems ground the transceiv...

Page 12: ...following current capacity Solder or clamp the cable plug when connecting the power cable to the backup battery to prevent voltage drops Power cable current capacity 25 A or more TX TX RX ANT TX TX R...

Page 13: ...outlet Extension cords should not be used unless absolutely necessary Using improper extension cords could result in fire risk In DC operation CAUTION Voltages greater than 16 V DC will damage the re...

Page 14: ...unit is installed or adjust the internal units etc CAUTION Disconnect the AC power cable and or DC power cable from the repeater Otherwise there is danger of electric shock and or equipment damage Rem...

Page 15: ...eaker Further adjustment of VOLUME to a comfortable listening level may be necessary at this point Transmitting Take the microphone off hook Wait for the channel to become clear Push and hold PTT to t...

Page 16: ...with a new rated fuse Replace the circuitry fuse as shown below WARNING DISCONNECT the AC power cable and or DC power cable from the repeater Otherwise there is danger of electric shock and or equipm...

Page 17: ...FM Hum and noise 40 dB Narrow typical with CCIT filter 46 dB Wide Limiting character of 70 100 of max deviation modulation Microphone connector 8 pin modular 600 Receiver Receive system Double conver...

Page 18: ...Microphone connector 8 pin modular 600 Receiver Receive system Double conversion superheterodyne system Intermediate frequency 1st 46 35 MHz 2nd 450 kHz Sensitivity 0 25 V at 12 dB SINAD Squelch sensi...

Page 19: ......

Page 20: ...MEMO...

Page 21: ...Count on us 7008...

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