sb220

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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...

Thread by: KG7HVR, Nov 20, 2020, 9 replies, in forum: Amateur Radio Amplifiers

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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...

Thread by: KD2DYY, May 25, 2020, 38 replies, in forum: Amateur Radio Amplifiers

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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...

Thread by: N4IDA, Jun 30, 2019, 18 replies, in forum: Amateur Radio Amplifiers

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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...

Thread by: W1LLO, Mar 25, 2019, 43 replies, in forum: Amateur Radio Amplifiers

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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...

Thread by: W5DP, Oct 22, 2018, 17 replies, in forum: Amateur Radio Amplifiers

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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...

Thread by: N8PWM, Aug 11, 2018, 16 replies, in forum: Amateur Radio Amplifiers