Re: [Freetel-codec2] TDMA and digital voice

2017-11-11 Thread Daniel Mundall
Hi Adrian, Totally agree about the SDR hardware getting cheaper, a good case in point is the limeSDR mini which has more than enough flexibility for any ham style project. https://www.crowdsupply.com/lime-micro/limesdr-mini#products-top Couple that with a rock64 and you could have a great low

Re: [Freetel-codec2] TDMA and digital voice

2017-11-11 Thread Adrian Musceac
Hi Ross, My initial GSM tests were done in the 70 cm band with low power (0.5 W). I recorded them here: https://www.youtube.com/watch?v=LC3GH0vp-iQ After that, as suggested by some local amateurs who are also part of the regulations comittees here, I moved it in the 1.2 GHz band with increased

Re: [Freetel-codec2] TDMA and digital voice

2017-11-11 Thread Ross Whenmouth
Hi Adrian, I suspect that many of the people here use proprietary SDR hardware - if code is linked with an appropriate HAL (hardware abstraction layer) eg libosmosdr/GNUradio, then it is pretty easy to swap the USRP for a BladeRF, or LimeSDR, or any other SDR with suitable capabilities which