[Drakelist] R4C Questions

Hi Group I recently obtained a Sherwood upgraded R4C (SN 22xxx), the only Sherwood upgrade it doesn't have is the 2K Upper Lower SSB filters. It performs very well but it has one oddity. When in SSB mode and the PBT is adjusted Upper Lower end of travel it varies the S-Meter from S6 middle

[Drakelist] TR7

Hi All; I’m trying to get the audio on my TR7 to work properly and making some progress. One thing that seems strange, Q2101 and Q2102 on the power supply board have mica isolators behind them attached with metal hardware which defeats the isolators and I can’t imagine the transistors

Re: [Drakelist] TR7

Y'know, I just had that area apart on mine a week and a half ago, but I don't recall the specifics of the mounting. The collector of Q2101 is definitely hot, but it is a plastic encased device with the only exposed metal on the back side, as I recall. Metal hardware on the top side shouln't be a