The receiver has a considerable frequency drift, even more than I expected.
When I visit next time I may have a better RX at hand. - if there is enough time to ge one going.
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...
1 hour ago
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