Would the WSPR protocol work better than the FT8 protocol in such a system?
Alan G0TLK, sent from my mobile device
On 23 September 2021 19:19:53 Glenn M-H via wsjt-devel
<wsjt-devel@lists.sourceforge.net> wrote:
Maybe a sound processing system can analyze the sound signal and place the
FT8 signal between the lowest human harmonic frequencies greater than 300Hz.
After a compressor/clipper a bandwidth (50-100Hz?) with some center
frequency automatically chosen above, should be notched out - and the FT8
signal inserted here. The FT8 signal must be inserted, after the non-linear
compressor/clipper, so the FT8 signal is not subjected to non-linearity.
OZ1HFT
-
Den 23. sep. 2021 kl. 19.27 skrev Philip Gladstone
<pjsg-w...@nospam.gladstonefamily.net>:
I think that it would be an interesting experiment to transmit voice on SSB
with a continuous FT8 transmission (maybe at around the 1kHz offset) and
see whether there is a combination of offset & volume difference that makes
the FT8 decodable if the SSB is barely understandable or better, and yet
have the FT8 transmission be essentially inaudible.
I'd like the FT8 transmission to just send the sender's callsign and
locator and not much else. This could be entirely automated by the
radio/microphone/speech processor/whatever.
Philip
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