rfcooltools.com
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joc,
use two npns hooked as a differential pair tie one base to a voltage reference (AC short) then apply your 3 MHz signal to the other base (bias it correctly of course) your rectified signal will be at the emitter.
2n3904 will work at these frequencies.
Can I still use protoboard at this frequencies? Probably not an issue unless your trace is a meter or more. Jeremy
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