On 11/2/17, Paul Sperbeck <wb9...@wi.rr.com> wrote: > He mentioned a 'fusion' (not the yaesu kind) of digital voice and TDMA > that could be used to create single frequency repeaters. Having built a > set of cans years ago this looks like quite an advancement. ... > I don't have any coding skills, I'm mostly a gear head and hardware > guy, so I'm asking here if this is feasible or compatible with codec2? > or even if it's a good idea?
Hardware matters for single-frequency. Not saying you can do the following just yet, since the first products seem to have shipped in 2006, but be aware of what commercial stuff can do: TDMA is not required. Consider the CDM-625 sat modem for example. You can pay a bit extra to unlock single-frequency capability. Simultaneous transmit and receive knocks you down about 0.3 dB, which might be perfectly acceptable for what you get out of avoiding the need for another frequency. Here, they call it DoubleTalk Carrier-in-Carrier: https://www.comtechefdata.com/technologies/doubletalk http://www.comtechefdata.com/files/brochures-pdf/DoubleTalk-Carrier-in-Carrier-Acceptance-&-Overview.pdf Generic hardware for use with any modem: http://www.comtechefdata.com/files/datasheets/ds-CLO-10.pdf Modem with feature included: https://ai-sat.com/wp-content/uploads/2017/03/Comtech-cdm625.pdf ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
