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General| Type | HF Transceiver |
|---|---|
| Modes | SSB, CW, AM |
| Power Output (SSB/CW) | 100 W |
| RF Power Output | 100 W |
| Current Drain (TX) | 20 A |
| Current Drain (RX) | 1.5 A |
| Tuning Steps | 1 kHz |
| Voltage | 13.8 V DC |
| Frequency Range | 1.8-29.7 MHz |
| Receiver Sensitivity | 0.5 µV for 10 dB S/N |
| Image Rejection | >70 dB |
| IF Rejection | >70 dB |
Detailed explanation of the transmitter's signal path and amplification stages.
Explanation of the receiver's signal path, from RF input to AF output.
Describes the speech processor circuit for increasing talk power and improving audio quality.
Details the phase-locked loop system for local oscillation stability and IF shift.
Explains the IF shift circuit for tone quality adjustment and interference elimination during SSB.
Lists common symptoms, causes, and remedies for receiver issues.
Identifies common symptoms, causes, and remedies for transmitter issues.
Lists problems and solutions for the DG-1 counter assembly.
Covers issues related to PLL unlocking and VFO operation.
Lists required test equipment and general adjustment principles.
Procedures for adjusting 9V and 3.3V power supplies on the AF-AVR unit.
Covers carrier unit and VCO voltage adjustments for the receiver.
Covers oscillation frequency and output voltage adjustments for the VFO unit.
Procedures for adjusting the counter's standard oscillator frequency.
Covers BPF adjustment for the phase detector unit.
Details VCO coil and balance VR adjustments.
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