I replaced the capacitor bank and nothing else a month or so ago. The meters were doing this before. And you could smell that old capacitor smell...
Hi Folks... I was reading on the HV modification done to the SB220 by "Lee" (ZL2AL) and would like to try this project this winter....Has anyone...
Anyone, I’m wondering if someone might help me identify what appears to be an early version of the Heathkit SB220. I was given a SB220 several...
Hi there folks! Long time reader, first time poster. I have a SB-221 Heathkit amplifier. I got it at a local hamfest and the man who sold it to...
I need to rewire my SB220 for 110vac. I saw in the manual one place where you move two jumper wires, but I suspect that that's not the only...
I have an SB220 amplifier that runs nicely at 1KW with 100W input. There are times when I don't need 1KW and would like to reduce the drive and...