Allison
Thanks for your response.
I see you/Hans included negative feedback on the QRP Labs 10W amplifier,? but WA3TFS does not.? I also have a MX-P50? that has negative feedback. So I may have to find out if its needed here by test.
I agree may need to run at higher voltage, I was just looking at the Power vs voltage curves in the? 50W Amp manual, totally forgetting the the power loss on AB mode.
Looking at the layout I don't think it is that difficult to provide separate bias circuits.
?
I have not been able to find a schematic for K5OOR/EBY.
Chris
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