Hi Glenn, Without knowing the exact encoding of the superfox signal I can say that the forward error correction and the message error detection parts of the message do change when a single bit is changed in the data portion of the message. There could be exactly the same bits in some part of the message, but as whole the message is critically different for "exactly the same" message. With the new OTP information superfox may never send two bitwise exactly same messages, even when the user data is the same.
73, Reino OH3mA > -----Original Message----- > From: Glenn Williams via wsjt-devel <wsjt- > de...@lists.sourceforge.net> > Sent: Monday, September 30, 2024 8:20 PM > To: wsjt-devel@lists.sourceforge.net > Cc: Glenn Williams <a...@alumni.caltech.edu> > Subject: Re: [wsjt-devel] SuperFox decoding weak signal > learning #FH > > I have been out of the software engineering loop too long, > so it would be a chore to dig out the answers to the > following questions from the released code. > > A suggestion for SF decoding? > > I presume that each time the SuperFox transmits a CQ the > message that is encoded is exactly the same. I presume > that portions of the signal report and 73 message contain > exactly the same encoding. I presume therefore that the > modulation for "exactly the same" data is also exactly the > same. Therefore once a SuperHound receives those > sections of messages, the software can "learn" what tones > to expect and where in the stream. So in the case of QSB > the learned data could be compared to (correlated with?) > the most recently received audio and thereby an improved > decode presumption could be supplied. > > --73, Glenn, AF8C > > -- > This email has been checked for viruses by Avast antivirus > software. > www.avast.com > > > _______________________________________________ > 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
