John, Sounds like Packet that one hears on two meters. From a reply by another ham, said it was most likely End Of Train box signals.
Jerry - K0HZI --- In digitalradio@yahoogroups.com, John Becker <[EMAIL PROTECTED]> wrote: > > What's the data sound like? > The TT is used to call up the dispatcher on remote radio > systems up and down the line. A train CAN'T make a > switch move other then by hand. > > > At 01:44 PM 8/26/2007, you wrote: > >I sometimes monitor the local railroad yardmaster dispatch. Every > >once and a while I hear what sounds like short Packet data being sent. > >Tried to decode using various Packet software, but nothing decodes. > >Anyone know what they are sending? I hear DTMF tones once and a > >while, but I think they use those tones to operate track switches. > > > >Jerry - K0HZI >
