QSL I was merely addressing your earlier stated requirements.?
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Obvious to reduce the upper range a smaller range variable cap is needed. Then as you or others describe, a band switch with different fixed capacitors. I suggest experimenting with these part changes off the board, until deciding on a modified design.?
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My own OP is homebrew. As I recall only exotic parts are the audio transformer and the variable cap, if you wish to breadboard an OP for experiments. Dave told us the transistors can be any NPN (laughter this was after I raided a junk box in a lab of a company Dave once worked for back east to match his NPNs).?
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It's a worthwhile project. Just managing your expectations on its ham signal performance.?
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Curt
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