[TrunkCom] digital and subaudible

[Brian J Cathcart]

On Fri, 1 Nov 2002 07:55:06 -0800 (PST) JERRY NONE
<thepolishdude@yahoo.com> writes:
> SUBAUD was prohibited because you could listen in on
> the phone patch talk groups.

WRONG.  Phone patches have NOTHING to do with it.  Uniden (actually Greg
Knox) used the control channel method because that's how the real radios
do it.  GRE did not initially have a way to use the control channel, and
since Greg patented his method., GRE could not use it.  So, they had to
come up with another way to track a system, thus the development of using
the sub-audible data.  Later GRE began using the control channel because
Motorola's patent expired.

--

The Scanner Dude
Brian J. Cathcart - KE4PMJ
South Florida Frequency & Trunking Guide - 6th Edition (On CD-ROM too!)