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zipy124
1 day ago
Yup, on the order of below 100 Hz usually
https://en.wikipedia.org/wiki/Extremely_low_frequency
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1 comments
fc417fc802
1 day ago
Below a certain point do you suppose my headphone jack can double as a transmitter?
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ferdzo
1 day ago
Technically, yes. Also a lot of people in the amateur radio community use the microphone in as a receiver for VLF transmissions.
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