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Low power operation, Typically 5 watts or less

7 votes

Swapping crystal from HF to VHF in a QRP tranceiver

Whether you place the power amplifier (to get to 10 mW or wherever you consider QRP to be) before or after the filtering stage depends on what you want to achieve. …
Marcus Müller's user avatar
2 votes
Accepted

What is a diode for in a JFET-based audio mute circuit?

This might serve many purposes. Or none at all – my experience is that many ham circuits you find online (or in the magazines where they are copied from) are copied with no understanding at all, or be …
Marcus Müller's user avatar