I still haven't completely unpacked from Dayton, but I went to a local swap here in Monroe, Mi. There I found a clean Heathkit SB-220 that was 'working' that I had to pull the trigger on. It already has been gone thru, recapped, and is also slightly modded. Can you look at the face and see the mod? At first, I missed it. The rocker switch on the left is not factory, but it looks original. The seller had installed an auto keying circuit in it, like a CB amp has. Hence, you can turn that switch on and it will key when it senses RF coming in. Turn that switch off and you will need a foot switch to key it. It aso has an additional non factory small transformer to run the auto key circuit and the tube bias. This amp with the added bias circuit runs very well on AM. Runs cool and does 1500 peak 1000 average. I like this one, but again don't love it. Heathkit's are not the best made amps.

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