[TrunkCom] Re: FCC says "250D" has NOT been type accepted.

[Wayne M H]

(Reply to the list directly, thanks)

SCAT and VOC aren't exactly air interfaces. They just allow the
control channel to switch to voice when all voice channels are busy.
No trunktrackers support this and probably wouldn't perform well since
all they really can do successfully is track a simple conversation.

A local ASTRO-only system has a few single channel VOC trunking sites
and another three channel VOC site. It's not a real loss to miss the
conversations. And VOC is meant for small, fill-in sites anyway.

VOC can be used on any band as long as the system is SmartZone and up.
SCAT can probably be used on any band.

-Wayne


On Wed, 18 Sep 2002 11:31:31 -0400, Marcel <Marcelrf@Bellsouth.net>
wrote:

>So why would you need the 250D since none of these air interfaces are =
P-25?
>
>JERRY NONE wrote:
>
>> They are usuaully found on the 800 and maybe 900
>> bands.
>> S.C.A.T. =3D Single Channel Autonomous Trunking
>> V.O.C.   =3D Voice On Control
>> S.C.A.T. is E.D.C.S. brands of a single frequency
>> trunking system while V.O.C. is the Motorola brand.
>> Each trunking method is desinged for users that want
>> trunking but do NOT anticipate alot of traffic or just
>> need to fill - in coverage gaps with a single
>> frequency trunking system.  I believe that Regular and
>> Multinet forms of L.T.R. do NOT have this type of
>> feature.
>>
>> What happens is this:  The repaeter stays in Control
>> Channel Mode until somebody keys up and then they can
>> basically talk on the control channel/frequency.
>> Once the conversation is over the repeater once again
>> goes back to Control Channel Mode.
>>
>> Somebody once stated that there is NO scanner that can
>> track a single frequency truking system like this.
>> --- Marcel <Marcelrf@Bellsouth.net> wrote:
>> > What band are SCAT and
>> > VOC TRS on?