QRP Projects

DIY Inline RF Power & VSWR Meter

This Arduino Inline Power and VSWR meter is a valuable tool for the antenna builder and transmitter testing.

https://sites.google.com/view/kn9b/digital-swr-meter

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QRP Home brew site  http://www.n6qw.com

Audio Amp w/AGC - replaces LM386:  /data/_uploaded/file/Audio_Amp_with_AGC.pdf