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CB SERVICE EQUIPMENT
TYPICAL CB CIRCUITS
BASIC CB SERVICE APPROACH
3 other sections not shown
abnormal adjustment alignment amplitude antenna applied audio signal audio/modulation section base basic bias block diagram capacitor CB set channel frequency circuit group coil collector crystal dc voltage defective detector diode distortion dummy load electronic emitter example Figure forward-biased frequency counter frequency synthesizer function gain indication input isolate the trouble LC circuit locate loudspeaker low-pass filter maximum measure meter or scope MHz signal microphone mixer monitor noise limiter normal ohmmeter operation oscillator oscilloscope output voltage power output power supply problem produce PTT switch reading receiver circuits resistance resistor RF amplifier RF probe RF signal S-meter S/RF meter schematic shown in Fig signal injection signal path signal tracing solid-state CB squelch stage step SWR meter test connections test equipment test point tester transistor transistor testers transmission transmitter section trouble symptom troubleshooting tube tuned typical vacuum-tube voltmeter volume control wattmeter waveform