--- In [email protected], "Patrick Lindecker" <f6...@...> wrote: > > Hello, > > > Once an effective, simple and robust SELCAL standard is developed (again > > IMHO it should be a logical extension of the >existing RSID and Call ID > > standards) it could eventually be parlayed into a more modern and > > effective variant of ALE. By using > RR for the nice SELCAL idea. I'm not sure it would be very easy if you need > a symetrical acknowledgment. If it is only a one way transmission without > any double acknowledgment it is much more easy. RS ID and CALL ID are public > sources. So...
One way would do it. To use an analogy, you ring the phone and the operator decides if he wants to pick up. With RSID, Call ID and SELCAL combined the called station would know he's being called, who's calling and on what mode and freq. Just like RSID, allow the alert to be ignored or allow the alert to cause the station to be put on the right mode and freq. Just like RSID the operator answers manually. By the way, is there currently a mechanism for monitoring the 3KHz passband for a certain Call ID and only alarming on that?
