On Wed, 2009-03-25 at 18:31 -0600, Frank Cox wrote: > On Wed, 25 Mar 2009 17:14:13 -0700 > John R Pierce wrote: > > > FM quality radio remotes are usually done with ISDN lines and hardware > > encoder boxes like aTelos Zephyr.. otherwise, its juts a voice dialup > > line, analog lowfi voice. > > > > http://www.zephyr.com/ > > Interesting. I see that this one: > > http://www.telos-systems.com/xport/default.htm > > works with POTS. I shall follow this up further. ---- John is correct in what he said. Back in the day the FAA and the Military Demodulated the RF Signal and sent it over a plain POTS line. This is still to this day how FAA radar is run and transmited from airport to the next tower. You may want to check out Times Microwave Inc. for hardware. The demodulator for the RF could be anything from a DSP IF Frontend to Software based. But now now be warned and don't get all to happy,,,There will be a delay in RF Tranmission JohnStanley