I could not explain it better. Unfortunately there are people on this forum seems to want to look for the three-legged cat.
________________________________ De: AC TALBOT <ac.tal...@btinternet.com> Para: digitalradio@yahoogroups.com Enviado: vie,19 febrero, 2010 20:18 Asunto: [digitalradio] (unknown) The term "Spread Spectrum" can apply to any mode that spreads its energy over more than the necessary bandwidth. If we assume the necessary bandwidth to be equal to the signalling rate than anything other than single carrier modes technically fall into this category. Even WSPR coul dbe considered spread spectrum! Its 6Hz bandwidth is wider than the 1.5 B/s rate. Within the WSJT suite, JT65 is more of a spread spectrum mode, and outside Joe's suite, MT63 with its 2.5kHz for a few tens of Bits / second is even more extreme. Andy www.g4jnt.com