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Anybody remember (or ever use) the old "Buzz-it" signal injector pen? It was uber-handy for stuff like this, generating a very jaggedy, sharp-edged waveform at something like 400 hz, rich in harmonics 'waay up thru the shortwave spectrum.
Last edited by old_coot88; 11-20-2014 at 11:06 AM.
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