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General| IF Shift | Yes |
|---|---|
| Notch Filter | Yes |
| Digital Display | No |
| IF Frequencies | 8.83 MHz, 455 kHz |
| Weight | 16 kg |
| Modes | CW, SSB, AM |
| Receiver Sensitivity | 0.25 µV for 10 dB S/N |
| Image Rejection | 60 dB or more |
| IF Rejection | 80 dB or more |
| Power Supply | DC 13.8 V |
Explanation of the audio to RF signal path in transmission.
Description of how incoming signals are processed.
Details on the Intermediate Frequency unit's functions.
Description of the Radio Frequency unit's components.
Details on the coil pack unit for tuning.
Explanation of the Phase Locked Loop assembly.
Description of the counter assembly unit.
Explanation of the transceiver's single conversion system.
Details on the RF speech processor for increased talk power.
Explanation of the circuit for monitoring own voice during transmission.
Description of the Phase Locked Loop circuit operation.
Explanation of the IF shift circuit for interference reduction.
Description of the Automatic Gain Control circuit.
Explanation of RF negative feedback and neutralization.
Explanation of the Noise Blanker circuit operation.
Step-by-step guide to removing the front panel.
Procedure for removing the Variable Frequency Oscillator unit.
Instructions for adjusting the mono-scale dial.
Steps to check the counter assembly (DG-1 option).
Procedure for removing the VOX/VR unit.
Steps for removing the meter.
Instructions for removing the paddle switch.
Guide on disconnecting leads from miniplugs.
Troubleshooting guide for receiver issues.
Troubleshooting guide for transmitter issues.
Troubleshooting for the DG-1 counter option.
Troubleshooting for Phase Locked Loop circuit issues.
Signal levels in the transmitter section.
Signal levels in the receiver section.
List of necessary test equipment for adjustments.
Overview of general adjustment categories.
Steps to prepare the unit before making adjustments.
Procedures for adjusting power supply voltages.
Adjustments for the receiver section components.
Procedure for adjusting VCO voltage.
Adjusting antenna and mixer coils for optimal performance.
Procedure for adjusting the Intermediate Frequency Transformer.
Steps to adjust the IF trap coils.
Adjusting carrier balance for optimal signal.
Adjusting the Noise Blanker circuit.
Procedure for calibrating the S meter.
Adjusting the Receiver Incremental Tuning circuit.
Adjusting the marker generator frequency.
Adjusting the Variable Frequency Oscillator settings.
Adjusting the DG-1 counter frequency.
Adjusting input signal levels for the counter.
Adjustments for the transmitter section.
Adjusting the carrier point for transmission.
Adjusting the speech processor for optimal output.
Adjusting VOX operation parameters.
Adjusting the side tone circuit.
Adjusting the RF meter reading.
Adjustments for the Phase Locked Loop system.
Adjusting balance variable resistors.
Adjusting the Voltage Controlled Oscillator unit.
Adjusting the IF trap coils.
Modifications for the marine band.
Circuit diagram for the rectifier unit.
Circuit diagram for the indicator unit.
Circuit diagram for the marker unit.
Circuit diagram for the relay unit.
Circuit diagram for the VOX-VR unit.
Circuit diagram for the High Voltage unit.
Technical specifications for the VFO-820.
Block diagram of the VFO-820.
How to connect the VFO-820 to the TS-820.
Circuit diagram for the VFO-820 switch unit.
Circuit diagram for the VFO-820 indicator unit.
Packing details for the VFO-820.
Technical specifications for the DG-1.
Block diagram of the DG-1 unit.
Circuit diagram for the DG-1 counter assembly.
Circuit diagram for the DG-1 counter mixer.
Circuit diagram for the DG-1 5V-AVR unit.
Circuit diagram for the DG-1 display unit.
Specifications for the YG-88C filter.
Specifications for the DS-1A DC-DC converter.
Details on the DC-DC converter unit.
Packing details for the YG-88C/DS-1A accessories.
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