TTI TCB-550, Service Manual

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2. Technical Description
2-1. General
Model CB-550 is an mobile type AM/FM radio transceiver for use of the Citizen Radio Service.
Front Panel Controls
LCD Display(Cannel ,RX,TX,AQ,SCAN,AM,FM,EMG Indicator).
Receiver Audio Control (With Power ON/OFF Control) Volume
Squelch Control Volume (S/W ON : TIGHT, S/W OFF : AUTO SQ)
RF Gain Control Volume
CHANNEL UP/DOWN TACT SWITCH.
AM/FM TACT SWITCH
EMG TACT SWITCH
Accessable Connectors
Antenna Jack
External Speaker Jack
External Power Cord
Microphone Jack.
Transmitter Power AMP ----------- VOLTAGE 12.5 V
Current 820mA
Transmitter DRIVER AMP --------VOLTAGE 12.5 V
Current 130mA
2-2. Type of em
2-3. Frequency Range : 26.965 MHz (CH.1) - 27.405 MHz (CH.40)
2-4. RF Power Output : AM/FM 4.0 Watts
2-5. DC Input Voltage and Current With 13.2V DC Input to Power AMP
FIRST IF -------------------------------- 10.695 MHz
SECOND IF ---------------------------- 455 KHz
FIRST LOCAL OSCILLATOR------- 10.965 MHz Below RECEIVING FREQUENCY
SECOND LOCAL OSCILLATOR--- 10.240 MHz
2-6. RECEIVER IF AND LOCAL OSCILLATOR FREQUENCIES.
ission :
AM(A3E) , FM(F3E)