Re: [Discuss-gnuradio] EDACS Control Channel

[Rick Parrish]

Frank Brickle wrote:

> If you poke around the net, you will probably be able to find the 
> source for an old DOS program that decodes EDACS control channel. It's 
> called "Trunk Tracker."
>  
I think "Trunk Tracker" is a trademark of Uniden. See 
http://www.trunktracker.com/ ...

Ryan wrote:

> Some details at
> http://users.netropolis.net/maverick/scanners/edacs.htm for anyone
> interested.
>  
The URL provided by Ryan is from a December 1997 rec.radio.scanner 
newsgroup posting. That code evolved into a program called E-trunk.

Things to be wary of the code: It was written for Borland's Turbo-C 
compiler as a 16 bit DOS program. The size of a C "int" is 16 bits here. 
The program assumes direct access to an 8250 compatible UART. It 
installs it's own interrupt service routine. It uses the progammable 
timer-counter as a time-reference.

You can find information about E-trunk on the Trunker Yahoo! groups 
mailing list.

-rick