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Ken Shirriff /
npub1mgq…sjel
2024-08-03 15:09:04
in reply to nevent1q…4hgx

Ken Shirriff on Nostr: I reverse-engineered the three custom Shuttle boards to determine the signal format ...

I reverse-engineered the three custom Shuttle boards to determine the signal format (FSK with 3600 Hz and 7200 Hz).
A digital circuit demodulates the signal using auto-correlation. 7/12



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