Hi Jim, To answer your question, 155.160 had been the unofficial National Search and Rescue Frequency for many years now. While it belonged to the old special emergency services group, now part of the public safety pool since 1999. It could be licensed by any number of different Rescue, ems organizations. It becomes a matter of interoperability which is the BIG push right now.
The civilian Sar groups operate on 155.160 and with a MOU between CAP and the Civilian Sar groups in question are able to effectuate field level interoperability. I hope that answers some of your questions. BTW thank you for your input. John kb3nqs --- In [email protected], "Jim B." <[EMAIL PROTECTED]> wrote: > > johnkihl wrote: > > Scott, > > > > The CAP is going from wideband FM to narrowband FM in > > a few months, We are exploring the Idea of using the old > > GE master II machine on 155.160 and crossbanding it with > > the new Motorola quantar Narrowband machine.freq pair for > > interoperability. > > Hmmm-don't quite understand what CAP is doing on a medical/public safety > freq. They should down below 150.8 I think? They fall under federal > freqs, not FCC, governed by NTIA. > > > The question that comes to mind is how to you convert the > > audio deviation from wide to narrow and back again, in a > > cost effective manner.? > > It's strictly a question of audio levels in the patch between the two. > Make sure you have the right level going from each rx to each tx to > properly drive them, and the transmitters will take care of making it > the right deviation > -- > Jim Barbour > WD8CHL >
