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General| Brand | Icom |
|---|---|
| Model | IC-703 |
| Category | Transceiver |
| Language | English |
Details operational parameters including frequency coverage, power, sensitivity, and dimensions.
Explains the RF, IF, mixer, and demodulator circuits of the receiver.
Details the microphone amplifier, modulator, and RF output stages.
Describes the Phase-Locked Loop circuits for frequency generation.
Explains the antenna matching network and SWR detection circuits.
Details the voltage regulation and distribution across units.
Procedures for adjusting reference frequency and VCO lock voltages.
Calibration steps for transmit peak power, carrier suppression, and output.
Calibration steps for receiver peak output and noise blanker.
Configuration settings for S-meter, filter calibration, and power meter.
Adjustment procedures for PA unit's idling current and SWR detection.
Configuration settings for antenna tuner and tuner relay.
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