Off the top of my head, one Repeater here does full POCSAG meaning anyone can get a real old fashioned UHF pager with the group and individual CAP codes programmed into it and receive full text messages. Messages can be sent via a DTMF cheat sheet that allows the full ASCII character table via a phone call to the Repeater controller or someone built a VB app to translate from text using any standard modem by having it dial up the controller and do the necessary DTMF.
Not sure if you'd call it paging, but there's another local system with 6 or 7 121.5/243.0 "airport ELT" monitors that listens for a multitude of DTMF sequences from those monitors to trigger an alert mode, add a second CTCSS tone to the output, and voice announce which airport is alerting, while also opening and closing audio from the mountaintop 121.5 and 243.0 receivers inbetween search team transmissions. The individual monitors also speak the airport identifier, the alert frequency and the relative signal strength in uV. The whole DTMF ball of wax is monitored by an off-mountain Linux box with a receiver on the Repeater's output and hardware DTMF detector for doing secondary alerts via email/SMS. -- Nate Duehr Sent from my iPhone On Feb 15, 2009, at 23:14, "dallasreact112" <dallasreact...@yahoo.com> wrote: > I am just curious if any other amateur 2 meter repeater has a more > complex RACES Skywarn paging system than the 146.88 W5FC Dallas TX > repeater? > > The normal daytime amateur state of the repeater is 110.9 Hz full PL. > > To go into RACES Skywarn mode the following sequence occurs: > > 1. Repeater Mode changes: > > a. PL changes to 114.8 Hz > > b. RX squelch changes to OR mode squelch. Carrier squelch OR 114.8 Hz > PL encode opens repeater. OR squelch allows the carrier squelch > threshold to be set higher than PL squelch threshold. > > 2. RACES Tones out: > > a. 30 second DTMF "A" tone > > b. Motorola 2 tone sequential pager tones group 1 > > c. Motorola 2 tone sequential pager tones group 2 > > d. DTMF "0" sent three times in quick succession to activate the old > Kenwood DTMF paging decoders available in their older units. > > I would love to hear from anyone that has a more complex paging > routine. > > 73 > > Bernie Parker > > K5BP > > Dallas Amateur Radio Club > > Tech Officer > > > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
