[TrunkCom] digital and subaudible

[Wayne M H]

On Thu, 31 Oct 2002 22:38:35 -0500, Brian J Cathcart
<scannerdude@juno.com> wrote:

>On Wed, 30 Oct 2002 19:42:33 EST TOES1976@aol.com writes:
>> I remembered searching with my=20
>> 92 last week and recieving the talkgroups for Conn SP digital trs in=20
>> subaudible.  Now if Uniden keeps the subaudible function in the new
>scanners.  That=20
>> might solve some 9600 problems.
>
>Uniden doesn't have the subaudible function.  That's a feature of the
>GRE-made scanners PRO-92 and PRO-2067.
>
>Are you getting talkgroups displayed in subaudible mode on the digital
>talkgroups, or only the analog ones?

I haven't confirmed this, I'm basing this primarily from assembling
experiences but 100% digital systems (APCO-16 or 25) do not send out
subaudible info on the voice channels. This info is sent in the
background stream of data for the voice call.

The purpose for the subaudible data was for priority monitor, which is
a scanning feature that allows a Motorola radio to switch to a voice
call and then monitor the subaudible data for a higher priority
talkgroup. So if the system can send the other active calls via the
background data stream, why use subaudible data?

-Wayne