If the changeover you are talking about is this one: http://www.nist.gov/pml/newsletter/radio.cfm as a proof of concept a DVB-T dongle/upconverter combo could almost certainly handle PM easily to output whatever it encodes, when paired with gnuradio..
The RTL2832U chip might also be able to handle some low band signals directly, using direct sampling. No upconverter. Regardless, then the data would be fed into gnuradio - the gnuradio developers GUI is called "gnuradio companion" It has a nifty way of doing this kind of thing, one builds a "flow graph" where the actual demodulation is simply laid out graphically and tested. When everything works to one's satisfaction the file is saved and it gets compiled - then it can run - its basically a python script. If the modulation scheme is public, I think you can be almost certain that gnuradio might be quite useful to rapidly design a tool to demodulate it. Perhaps very quickly. For the money, one really couldn't hope to beat the flexibility of this combination in any other manner. If I were interested in trying this I would join the gnuradio mailing list and ask there. Perhaps the answer is surprisingly simple. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
