Woke up to a couple of needed verifications. PJ5/K3TRM, who I worked on 20 RTTY twice (wasn't sure if the first one was a good contact, but I got the QSL for both so I guess it was...). And that's #107 in the bag.
Also in: K2C in Rhode Island on 20m PSK31, a state that I didn't really "need" (I have a paper QSL for RI), but it fills in another grid place for 20m PSK31 on LOTW, so I'll take it.
Three more to go (MS, NE and NH) for WAS 20m PSK31. To do it all on LOTW, I'll also need ME, MN and OK as I have those three verified on paper.
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...
10 hours ago






(From 1978 WRTH)
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