Interesting discussion which reminded me of reading about a rather
remarkable case of RFI into a professional audio system.
In 1972 Mike Oldfield recorded Tubular Bells at a studio about 40 miles
from the Rugby 16 kHz VLF transmitter running c. 500kW. If you attach an
SDR to the audio from a good quality copy of Tubular Bells (e.g. CD) -
you can read the CW being sent.
No originality claimed - details at GBR in Tubular Bells - 16 Khz makes
it onto CD who wudda thunk!? : r/amateurradio (reddit.com)
<https://www.reddit.com/r/amateurradio/comments/7or56a/gbr_in_tubular_bells_16_khz_makes_it_onto_cd_who/>
- but rather cool I thought! Clearly someone needed to learn about pin 1
problems - though I suspect this was long before XLR connectors were
common..
73,
Andy, G4PIQ
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