In 2011 I purchased on Ebay a new, unbuilt Heathkit SB 220 Linear Amplifier from N3AYA. Having built many Heathkits (an AR-4 Short Wave receiver, test equipment, an H89 computer, color TV and a Hero 1 robot (.....anybody wanna buy a robot????) finding an unbuilt SB 220 took me back to the “good ol’ days”. These slides pictorially show the construction process as instructed by Heathkit!
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