Re: RD16HHF1 power curve flattening...some
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Hey Nick… did you make any progress? I’ve been dying to dig into this but work keeps getting in the way of playing with my radios. That’s gotta stop!
Something is up. You can actually put another secondary winding on the PA transformer for negative feedback… That’s actually preferred.
I ran a couple simulations and the whole thing is stable without the feedback though (slightly lower gain though).
I sure like the 20+ watts out of those RD16 HHF1’s though and they are bullet proof. I’ve never blown one out, and I’ve designed a lot of amplifiers with them and made a lot of mistakes with the “ON” switch in the “GO” position.
Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
Owner - Operator
Big Signal Ranch – K9ZC
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Villa Grand Piton – J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com
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From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Nik VK4PLN
Well, i have dont my mods and powered up. Results are mixed: