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Query: heathkit sb 220
Links: 5 | Categories: 1
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IV3GFN modification and restore of an HeathkitSB220 -
Repairt a Heathkit SB-220 Linear Amplifier with a bad Plate Voltage meter -
Heathkit SB-220 Amplifier modification by KE5YA -
Heathkit SB 220 mods, replacing the Zener ZD1, replacing the plate-voltage voltage divider, adding a keying circuit for solid state transceivers -
Heathkit SB220 refurbishing by PA5CA