Mark Rehorst wrote:
My SX-190 has buzzed at a level just loud enough to be annoying

quiet set, or do they all buzz like this? Would putting caps across
the rectifiers reduce the buzz, or do I need to go to a quieter
external supply? Or should I do something to the audio amp?


I had a buzzy set of that vintage, not an SX-190, and it turned out the
power xfmr was bad. Sounded just like power line noise and was worse
with an external antenna. Go figure.

One more thing- where can I get a set of tuning tools that includes
the hex drivers for IF can slugs?

Radio Shack?

-Bill