[ccomer1955]

This article sounds very familiar to me. I wonder if that is the reason I'm hearing hum between stations on my 41-280? I was reading this at work, and it sounded familiar to me. I'll have to look into it when I get home tonight. I'm also thinking I might have the mains hooked up backwards. The hot side goes to the on/off switch, right? And the neutral goes to the transformer primary? After passing through the safety caps in the bakelite box, that is.

http://www.philcoradio.com/tech/hum.htm