[Yaesu] Oscillating FT

[W Sanders]

The oscillation might be coming from one of the transmitter stages. Make sure 
the final stage is not self-oscillating! My FT-101 self-oscillated once during 
a reneutralization attempt - it produced a loud "farting" noise when it was on 
  the 10M band, followed quickly by the smell of hot (but fortunately not 
burned-out) circuitry. Self oscillation is more likely to occur on higher 
bands and with the "twitchy" 6JS6C-based finals of the 101. I think later 
models switched to different tubes.

Also, reciever oscillations can be caused by the extra resistance and 
capacitance of cold solder connections or bad components - an old heathkit 
receiver I have oscillated like crazy until I hunted down the cold solder 
connections. Once resoldered, it worked fine.

-Wiley KF6IIU