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#5
December 30th 09, 05:51 PM
posted to rec.radio.amateur.homebrew
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Bi-directional Linear amp - news of the weird
"Kenneth Scharf" wrote Anyway we were talking about how the linear improved the transmit signal strength, but did nothing for the receiver and he wanted to also build a small receiver preamp to put inside the linear cabinet, and we both got the samw brainstorm, at the same time. Why not wire the linear up so it would work in BOTH directions? I suppose a grounded grid preamp using tubes with a combined plate dissipation of some 300 watts seems crazy, Try 1000 watts for the combined plate dissipation. The 572B actually had only 150 watts plate dissipation and the SB200 used two of them. The T160L version of this tube had a 160 watt plate dissipation. Many SB200's grossly overloaded these tubes and got away with it. Sorry - I misread the OP as an SB220 |
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