First CW contest I've worked since 1996, I think. Just over 4 hours operating time (2330-0445), logged 68 QSOs, 28 States, 3 CanProvs.
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)
1 comment:
My KPA has about 6dB loss in RX path when in "operate" compared with the 'standby' mode signal on 6M only. Using it with the K3 and AUX cable. (No RCA T/R cable connected).
I'm thinking it has to do with the diodes in the RX path when in the operate mode. In standby, there is a relay that bypasses the solid state T/R switch. Anyone else seen this?
73, DU1KA (W7XA)
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