There was a project based on a CML Micro chip (the same one used in Tetra handsets), I think Bruce Perens was its godfather. It sounded very interesting considering those chips were not very expensive, but I have no idea what the status of that is currently.
My main concern is coming up with a good frontend. I think that's very hard and basically out of reach for an amateur project. On the other hand, may I suggest taking a look at LMS7002 by Lime Micro, it's a full featured chip designed for cell networks and it's very well documented. The company behind it is very user-friendly and they actually go out of their way to provide support for amateur radio. Regards, Adrian On 1/10/18, Sebastien F4GRX <f4...@f4grx.net> wrote: > Let's build a module with these: > > http://www.analog.com/en/products/rf-microwave/iq-modulators-demodulators/iq-modulators/adrf6755.html > > http://www.analog.com/en/products/rf-microwave/iq-modulators-demodulators/iq-demodulators/adrf6850.html > > some manufacturers may even have IQ transceivers on a chip. > > :) > > Sebastien > > > Le 10/01/2018 à 14:52, Jeroen Vreeken a écrit : >> On 01/10/2018 02:11 PM, Sebastien F4GRX wrote: >>> have a look at the hermes lite 2 ( http://www.hermeslite.com ) >>> >>> It is in the process of being finalized, and can work with a raspi host. >>> >>> >>> I am also working on this: https://github.com/f4grx/hn70ap >>> >>> Not SDR, more SDFSK (with a si4463) >>> >>> some boards are being made right now. >>> >>> freedv software can definitely work on this. >>> >>> gps and battery can be added later in a v2. >>> >>> >>> dra818 is cool but you get the same problem as dstar and other stuff: >>> very >>> suboptimal AFSK over FM... >> I know, but the FM repeater already exists and can be used relativly easy. >> What I would really like is a module like the dra818, but capable of SSB >> (or IQ). >> Maybe my next project will be a 'HT2000' to as a companion to the >> SM2000.... >> >> 73, >> Jeroen PE1RXQ >> >> >> ------------------------------------------------------------------------------ >> 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 > > > > ------------------------------------------------------------------------------ > 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 > ------------------------------------------------------------------------------ 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
