Kenwood TS-930 (1982–1989)
Little is documented about the Kenwood TS-930 in the usual consumer-audio record, and even in amateur-radio circles the paper trail is thinner than you'd expect for a flagship HF transceiver. What can be said with confidence: it's an all-solid-state HF transceiver, it was sold alongside the TS-940 as part of Kenwood's early-1980s SSB line, and one repair shop's page dates the TS-930S/TS-940 family to 1982-1989. Kenwood used the designations "TS-930" and "TS-930S" interchangeably in period material. No source found so far explains whether there was a meaningful difference between the two, so treat them as the same radio until someone turns up a definitive document.
The owner's manual (for the TS-930S, but covering the same chassis) is the best surviving source. It describes a seriously built radio: coverage of all amateur bands between 1.8 and 29.7 MHz, plus general-coverage shortwave reception from 150 kHz to 30 MHz. The receiver is a quadruple-conversion superheterodyne with intermediate frequencies at 44.93 MHz, 8.83 MHz, 455 kHz, and 100 kHz (the last used on receive only). The transmitter is triple conversion, double in CW. A three-loop PLL drives the VCO for dual digital VFO operation in 10 Hz steps. Kenwood rated the final at 100 W output, using a pair of MRF422 transistors on a 28 V rail with fan cooling. The manual also notes a 6 A fuse for the TS-930S (4 A for the TS-930V variant on 120 V), selectable 120/220/240 V AC mains, and an optional internal automatic antenna tuner. Receive audio is 1.5 W into 4-16 ohms.
Beyond the manual, most of what survives is owner testimony rather than documentation. The TS-930 has an internal power supply - a point owners repeatedly raise, since the later TS-850S required an external one. It has no FM and no memory for storing operating modes, and both drew complaints. The AGC is not defeatable ahead of the first mixer, which some operators found compromised the panoramic display when a strong signal was nearby. The power-supply heatsink runs hot, and at least one owner reported transformer hum he couldn't eliminate. On the positive side, the same operators describe the receive audio as superb and the AGC as excellent, with more than one saying the TS-930 beats the later TS-850S on CW reception. One owner modified the power-supply fan to blow onto the heatsink rather than exhaust from it, fabricating a new impeller with reversed blade angles.
Service documentation exists. Kenwood published a TS-930 service manual, and a third-party repair page covers the TS-930S/TS-940 family. Parts are scarce enough, though, that owners actively hunt for parts radios. Common failure points aren't well catalogued in public sources beyond the heat and hum issues noted above.
Known specifications
- Type: All-solid-state HF amateur transceiver with general-coverage shortwave receiver
- Amateur band coverage: 1.8–29.7 MHz
- General coverage receive: 150 kHz–30 MHz
- Modes: SSB, AM, FSK, CW (no FM)
- Receiver: Quadruple conversion; IFs at 44.93 MHz / 8.83 MHz / 455 kHz / 100 kHz
- Transmitter: Triple conversion (double in CW); 100 W output; two MRF422 finals, 28 V, fan cooled
- Frequency stability: ±200 Hz after warm-up, ±30 Hz per 30 min thereafter
- RIT range: ±9.99 kHz
- Audio output: 1.5 W into 4–16 Ω
- Power supply: Internal; 120/220/240 V AC selectable; 6 A fuse (TS-930S)
- Production: c. 1982–1989 (date range given for the TS-930S/TS-940 family)
- Optional: Internal automatic antenna tuner
A factory brochure, an original invoice, or a serial-number range for the TS-930 would fill some of the gaps here, and they are real gaps.
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