Brother K2JK asked me, "Why do you need a KX2?" As if that's a relevant question...
Spark Gaps and Coherers demonstrated and Measured by CuriousMarc
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*CuriousMarc provides a good demonstration of how spark transmitters work
with coherer detectors. His measurements are really illuminating. His
device j...
11 hours ago








(From 1978 WRTH)