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General| Type | HF Transceiver |
|---|---|
| Tuning Steps | 10 Hz |
| Modes | AM, FM, CW |
| Receiver Sensitivity | 0.25 μV for 10 dB S/N (SSB) |
| Image Rejection | 80 dB |
| IF Rejection | 80 dB |
| Audio Output | 2 W into 8 Ω |
| IF Frequencies | 8.83 MHz, 455 kHz |
| Supply voltage | 13.8 V |
Details the receiver signal path, filtering, and IF stages.
Details the transmitter signal path, modulation, and RF stages.
Explains the Phase-Locked Loop system for frequency control.
Describes the CPU, I/O signals, and display drivers.
Details the Noise blanker and other accessory circuits.
Explains the operation of the noise blanker circuits NB1 and NB2.
Details the speech processor block diagram and function.
Describes the circuit for monitoring transmitted signals.
Explains the circuit for generating side tone signals.
Details the automatic SWR measurement circuit.
Explains the CW-VBT and SSB-slope-tune functions.
Describes the operation of the notch filter.
Explains the AF-tune circuit for CW mode.
Details the VOX and anti-VOX circuits.
Describes the fan control for the final amplifier heat sink.
Explains the fan speed-up for temperature protection.
Describes the fan control for the power supply heat sink.
Details the timing circuit for CW full break-in.
Explains the Automatic Level Control circuit.
Details the VSWR protection circuit.
Describes the overcurrent protection for the final unit.
Maximum ratings for 2SK984K transistors.
Maximum ratings for 2SC2274K transistors.
Block diagram and function for µPD8049C-211.
Description of ND487R1-3R component.
Maximum ratings for 2SC2899 transistor.
Maximum ratings for NJM2901 IC.
Maximum ratings for NJM2904D IC.
Description of HD10125 component.
Component side view of the LPF unit.
Component layout of the Switch unit.
Component layout of the Power Supply unit.
Component layout of the RF unit.
Component layout of the PLL unit.
Component layout of the Digital unit.
Component layout of the 100W Final unit.
Component layout of the Main Encoder unit.
Component layout of the RIT Encoder unit.
Component layout of the Signal unit (part 2).
Component layout of the Signal unit (part 2).
Detailed schematic of the Digital unit.
Detailed schematic of the AT unit.
Lists semiconductor parts for the TS-930S.
Lists component addresses and terminal functions for S/N 310XXXX.
Lists various transistors, FETs, and ICs.
Lists parts for the Power Supply unit.
Lists parts for the RF unit.
Lists parts for the PLL unit.
Lists parts for the Switch unit.
Lists parts for the AT unit.
Cautions and steps for disassembling the rear panel.
Cautions and steps for internal disassembly.
Cautions and steps for front panel disassembly.
Lists necessary test equipment for adjustments.
Details checks for microprocessor functions.
Procedures for adjusting various voltage levels.
Steps for adjusting the PLL circuit and VCOs.
Steps for adjusting the receiver section.
Steps for adjusting the transmitter section.
Shows signal levels in the receiver circuitry.
Shows signal levels in the transmitter circuitry.
Lists parts for the SP-930 speaker.
Lists parts for the AT-930 antenna tuner.
Lists parts for the SO-1 unit.
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