Servicing early Yaesu and Trio/Kenwood HF equipment - part one

摘要

If you have confidence in your technical ability, and want to get on the air cheaply, it is possible to pick up an old but repairable Yaesu or Trio/Kenwood HF rig for well under £100. Alternatively, if you happen to have one of these 'good old timers', you may not feel like replacing it just because it develops a fault. G3LLL describes how you might go about repairing it. It may surprise younger hams to hear that 20-year-old rigs, like the TS-830 or the FT-101ZD will outperform some much more modern equipment in the receive mode, and that, especially when a speech processor is not used, they seem to have more 'punch' on transmit. 'Progress', in the ham radio-manufacturing world, is not necessarily always about improved performance; in many cases it is more about adding facilities that few people want or understand, but which the makers think might just help sales.