Heathkit SB-220

Heathkit SB-220 and Heathkit SB-221

(Featuring 9 links)

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2 kW HF Amplifier Rebuild - Heathkit SB-220 amplifier repaired at W8UM
[Hits: 4617 | Votes: 2 | Rate: 7.50]
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: 2853 | Votes: 1 | Rate: 1.00]
Heathkit SB-220 and SB-221 essential mod - Modifications to avoid damage when 3-500Z tubes fail.
[Hits: 2688 | Votes: 8 | Rate: 5.00]
Improving Heathkit SB-220 - Circuit Improvements for the Heath SB-220 Amplifier
[Hits: 2045 | Votes: 5 | Rate: 10.00]
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: 1914 | Votes: 5 | Rate: 9.80]
SB 220 modification - IV3GFN modification and restore of an HeathkitSB220
[Hits: 286 | Votes: 1 | Rate: 8.00]
SB-220 / 200 Amplifier with Solid-State Transceivers - Using Solid-State Transceivers With Older Tube Amplifiers, some Hines and Kinks on the Heath SB-220/200 that can be useful in your application
[Hits: 511 | Votes: 0 | Rate: 0.00]
SB-220 Mods - Heathkit SB-220 Amplifier modification by KE5YA
[Hits: 261 | Votes: 0 | Rate: 0.00]
SB-220 SB-221 Heathkit Amplifiers - SB-220 or SB-221 Heathkit Amp Using Eimac's 3-500Z - K0GKD
[Hits: 3956 | Votes: 6 | Rate: 7.17]

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