On Fri, Feb 21, 2020 at 11:34:51AM +0000, Bill Somerville wrote: > where I say non-standard I mean within the constraints of the digital source > encoding used by the various modes in the WSJT suite of software. That does > not exactly align with all callsigns issued around the World, to do so would > greatly impact the efficiency, and hence the sensitivity, of the various > weak signal modes.
Would it ? Seven characters in the set [ 0-9A-Z] would require 37 bits, 9 more than the current 28. So for e.g. WSPR, the number of data bits would be 59 instead of 50. Scaling the number of FEC bits by the same ratio and keeping the total transmitted energy for a message the same, the Es/No would decrease by 0.7 dB. How many of the currently received WSPR messages would be lost ? I suspect that would be a tiny fraction, as almost all are more than 0.7 dB above the threshold. I don't think it would affect the functionality of WSPR in any significant way. Ciao, -- FA _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
