Heathkit SB-220

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Heathkit SB-220 and Heathkit SB-221

• 2 kW HF Amplifier Rebuild - Heathkit SB-220 amplifier repaired at W8UM
  [ Hits: 7326 | Votes: 6 | Rating: 5.17 ]
• Heathkit SB-220 - The Heathkit SB-220, two 3-500Z, amplifier made a notable impact in the world of amateur radio when it debuted in 1975. Resources and modifications
  [ Hits: 3603 | Votes: 1 | Rating: 1 ]
• Heathkit SB-220 Meter Repair - Repairt a Heathkit SB-220 Linear Amplifier with a bad Plate Voltage meter
  [ Hits: 762 | Votes: 0 | Rating: 0 ]
• QSK for the TL-922 and SB-220 mods - Beautifully constructed amplifiers. Unfortunately, are not suited for high speed T-R switching, a necessary attribute for operating AMTOR, QSK-CW, or SSB-VOX modes.
  [ Hits: 2667 | Votes: 6 | Rating: 8.33 ]
• SB 220 modification - IV3GFN modification and restore of an HeathkitSB220
  [ Hits: 854 | Votes: 1 | Rating: 8 ]
• SB-220 Mods - Heathkit SB-220 Amplifier modification by KE5YA
  [ Hits: 812 | Votes: 0 | Rating: 0 ]
• SB-220 Repairs and Modifications - Heathkit SB 220 mods, replacing the Zener ZD1, replacing the plate-voltage voltage divider, adding a keying circuit for solid state transceivers
  [ Hits: 725 | Votes: 0 | Rating: 0 ]
• SB220 refurbish - Heathkit SB220 refurbishing by PA5CA
  [ Hits: 566 | Votes: 1 | Rating: 10 ]