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Dave GW4GTE`s website edit / delete
Simple, well-documented kits for 160m/80m AM. I like the PWM audio modulator using a SMPSU chip.
to am electronics hf mf radio ... on 30 March 2012
Long Wave Radio! edit / delete
136kHz and 500kHz operation. Lots of information.
to amateur electronics lf mf radio transmitter ... on 13 September 2011
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tasty by Adam Sampson.