I added the second to the last paragraph and a request for explanation on long receive integration.
-Dave, KB3FXI MT63 is an orthogonal frequency division multiplexed mode consisting of 64 parallel carriers each carrying a part of the transmitted signal. There are 3 bandwidths and baudrates that fldigi implements in MT-63: 500 Hz - 5 baud, 1000 Hz - 10 baud, and 2000 Hz - 20 baud. The lowest frequency transmitted is always 500 Hz. If you have a scheduled MT63 qso or are trying to copy what you think is MT63 you should tune the signal so that the lowest observable signal is at 500 Hz. Fldigi is capable of decoding signals that are mistuned by as much as +/- 100 Hz. Long interleave and 8-bit extended characters are usually agreed upon before a qso exchange begins. The default is to use the long interleave. 8-bit extended characters allow the transmission of Latin-1 accented characters. [can anyone explain "Long receive integration"?] Transmit lower/upper start tones is a unique option provided by FLDIGI which enables the transmit of upper and or lower tone markers. Because the MT63 signal is spread over a wider range audio frequency, weaker signals can be difficult to detect. The marker tone duration can be set to a specific length in seconds. This is the time that the tones appear at the beginning of each transmission before the MT63 data is sent. MT63 is used extensively in the Military Affiliate Radio System (MARS). w1hkj wrote: > At your convenience please review the revised documentation for version > 3.13 > > http://www.w1hkj.com/FldigiHelp-3.13/ > > Thank you. > > 73, Dave, W1HKJ > > > > ------------------------------------------------------------------------ > > _______________________________________________ > fldigi-alpha mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/fldigi-alpha _______________________________________________ fldigi-alpha mailing list [email protected] https://lists.berlios.de/mailman/listinfo/fldigi-alpha
