On Fri, 2 Apr 2010, Doug Bade wrote: > I would be glad to elaborate about D-Star Repeater conversions as > there are multiple ways to do it now and Any EDACS capable or Smartnet > Capable repeater would do D-Star as both fundamentally have the parts > to transmit and receive GMSK type waveforms
There is one issue that needs to be handled. When a D-Star repeater "hears" another user on the input for a callsign not it's own, the modem is captured, and any input packet that starts or is received in the middle of that transmission is discarded. This, of course, would not be permitted in the Motorola world; something would have to be done with the received information, even if a band-opening allowed a remote digital user to interfere with a digital trunking system's input channel(s). Practically speaking, I think that the earlier data should be thrown out, and the packet decode restarted with the new signal. Of course, short of doing SDR and de/re-coding on the fly, this is not a trivial problem to fix. When your RSSI is measured as BER, it's a different world. -- Kris Kirby, KE4AHR Disinformation Analyst
