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

Wed, 18 Sep 2002 18:53:21 -0400

That is why I wondered  about the connection to P-25

How about "Protocol" rather than "air interface"? Do you like that better?

Wayne M H wrote:

> (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 <[email protected]>
> 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. = Single Channel Autonomous Trunking
> >> V.O.C.   = 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 <[email protected]> wrote:
> >> > What band are SCAT and
> >> > VOC TRS on?
>
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