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Info on this discontinued HF Transceiver

Cat interface for Kenwood transceivers, tested with TS-850 and kenwood TS-50 but should work with all Kenwood rtx

Pictures of the Kenwood TS-850 manual

Another good collection of TS-850 modifications

Collection of modifications notes for the Kenwood TS850

TS-850S typical faults and solutions

Collection of mods for the Kenwood TS-850

Must modern HF transceivers be treated as black box appliances? VE1FA doesn’t think so, and his experience with the Kenwood TS-850SAT bears him out.

RigPix Database picture of the TS-850

This modification will allow the use of separate receive and transmit antennas on the Kenwood TS-850S/AT.

Over two decades ago, the Kenwood TS-850S HF transceiver established itself as a robust performer, known for its excellent receiver and versatile operating features. This vintage rig, often found on the used market, continues to be a favorite among many amateur radio operators for its solid construction and reliable performance across the HF bands. Adrian's Yahoo! Group provided a dedicated forum for TS-850S owners to exchange insights, troubleshoot issues, and share modifications or operational tips. Such community-driven platforms were crucial for extending the operational life and maximizing the utility of classic transceivers, fostering a spirit of mutual aid among hams. Discussions frequently covered topics like DSP unit upgrades, common repair challenges, and optimizing the rig for contesting or DXing, reflecting the enduring interest in this particular Kenwood model.

Reduces line noise on TS-850

QST Magazine, 1991 July, review of the Kenwood TS-850S 160-10 Meter Transceiver

This page describes some repair tasks related to the Kenwood TS-850 transceiver. You will be guided through the repair proces step-by-step followed by descriptions and pictures.

Elecraft K3 vs. ICOM IC-781 vs. Kenwood TS-850: comparative Measurements and Experience

Connecting a Yaesu MD-100 dynamic desktop mic to the Kenwood TS-850

TS-850 is not much effective on AM since it does produce fairly clean audio, however while it does noticeably improve low-end frequency response

DSP-100 Hi-Fi TX and RX Mods for the TS-850S by KA0KA

KA0KA ESSB with the Kenwood TS-850/DSP-100 project

A complete list of resources for the Kenwood TS-850 mantained by TK5EP

Resources for Kenwood TS-850SAT transceiver modifications, cables and tips

Yahoo discussion list for Kenwood TS-850, TS-450 and TS-690 users

The author fixed a friend's Kenwood TS-850S radio, which suffered from Capacitor Plague, a common problem in 1990s electronics where capacitors leak and damage circuit boards. The CAR board, responsible for generating signals, was especially affected. The author cleaned the board, replaced the capacitors, and repaired a broken trace. Although the radio mostly functioned afterward, the "Slope Tune" control behaved abnormally. The cause seems to be a software issue, not a hardware one.