On 28/08/2016 09:01, Wolfgang wrote: > Joe Taylor told us, that JT65 signal messages can only contain up to max. 13 > characters.
Hi Wolfgang, that is a misquote, it should say that "JT65 *free text messages* can only contain up to a maximum of 13 characters, from the JT65 alphabet, including spaces". You should probably read the JT65 protocol description in the WSJT-X User Guide and try some experiments with the jt65code test program shipped with WSJT-X to help understand the JT65 message coding system. You will discover that not all possible callsigns can be compressed in the protocol to form standard messages therefore some exotic callsigns are likely to be issued that cannot take advantage of the JT65 standard message forms. This is a necessary consequence of design decisions balancing sensitivity, speed and flexibility. These parameters are dependent on each other, you cannot increase one without decreasing one or more of the others. If you are unfortunate enough to have a callsign that is not compressible by the protocol then you just have to be creative with the free text messages and hope that your QSO partners can do the same. 73 Bill G4WJS. ------------------------------------------------------------------------------ _______________________________________________ wsjt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/wsjt-devel
