[time-nuts] Phase modulation detection/NIST plan

[Tofurk Ei]

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.