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 On Thu, Sep 23, 2021 at 1:21 PM Glenn M-H via wsjt-devel < wsjt-devel@lists.sourceforge.net> wrote: > Hi Gerry > > Actually the Reed-Solomon Identifier only mediates the digimode - not the > callsign. > > APRS mediates the callsign: > https://en.wikipedia.org/wiki/Automatic_Packet_Reporting_System > > FT8 or similar, could be sent in the SSB channel at reduced signal > strength, with callsign and optionally the current location. FT8 only uses > 42Hz bandwidth. The FT8 signal can be heard. > > Br, > > OZ1HFT > > - > > Den 23. sep. 2021 kl. 18.28 skrev Glenn M-H <glenn.mh...@gmail.com>: > > Hi Gerry > > You are looking for Reed-Solomon Identifier - takes 1.4 seconds: > > Look in the references instead of the danish text :-) : > https://da.wikipedia.org/wiki/Reed-Solomon_Identifier > https://de.wikipedia.org/wiki/Reed-Solomon-Identifikation > > - > > Den 23. sep. 2021 kl. 18.03 skrev gerard--- via wsjt-devel < > wsjt-devel@lists.sourceforge.net>: > > > > There is something so attractive about the layout of WSJTX. Its > addictive. Seeing the callsigns and band activity, albeit in a very very > segment is a boon > > But we have the mad situation of S9 FT8 signals, while SSB segment is dead > or quiet. > > Am I being naive to wonder if it would be possible to inject some data > onto SSB signals, so one could rest the tuner on an SSB signal and see > their callsign, locator and to whom they are on QSO? So an SDR receiver > could sweep a band and see what is going on? > > WSJTX technology or something similar could enliven many other modes > > Gerry Bulger G3WIP ZD7GB ZD7 > > https://bulger.co.uk/radio > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel >
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