Hi Bruce,
On 17-04-12 23:45, Bruce Perens wrote: > At the end of the D-STAR article in this month's QST, it mentions that > Yaesu will be coming out with their own digital voice implementation > at Hamvention. Yes, there has been quiet a hefty discussion about this in the D-STAR mailing-lists. Actually, the documents that yaesu has made public sofar actually talk of two different systems they will bring out: one "TDMA" (using 12.5 Khz bandwidth) and one "FDMA" (using 6.25 Khz bandwidth). Althou other information has not been given, the general idea is that the TDMA system is DMR; which is a ETSI standard TS 10236101 up to 10236104; which is sold with the commercial name "MOTOTRBO". For the FDMA, the name that pops up most is P-25 (also known as APCO-25). Another option would be ETSI dPMR (TS 102 490 and TS 102 658). I would prefer the latter as that is open and better suited for ham use (no TDMA, much simpler, less bandwidth, no distance limit due to TDMA); but I fear that will not the one. The main driver in the dPMR-forum is actually i-com. For the rest, let's wait and see what they show at hamvention. > Thanks > Bruce 73 Kristoff - ON1ARF ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Freetel-codec2 mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freetel-codec2
