[TrunkCom] Astro/APCO25

[sly.debbie@verizon.net]

Thanks-
How do you tell the difference? By the way the control channel sounds? What
I've got locally is federal  gov't uhf system. Is there a standard they use
across the country as for which type?
sly

Brian J Cathcart wrote:

> On Mon, 15 Apr 2002 21:11:32 -0500 sly.debbie@verizon.net writes:
> > Motorola digital Astro system is not APCO25 compatible right?
>
> Yes and no, it depends which Astro you are talking about.  Motorola has
> called all of their digital systems Astro, both their non-APCO-25 digital
> system and APCO-25 digital systems.  What you have out there is:
>
> - Astro systems using the non-P25 3600 baud control channel with the
> VSELP (non-P25) vocoder [example: Celeveland, OH and Memphis, TN]
>
> - Astro systems using the non-P25 3600 baud control channel with the IMBE
> (P25) vocoder [called "Astro CAI"] [several examples, such as state of
> Florida, Boca Raton, etc]
>
> - Astro systems using the P25 9600 baud control channel with the IMBE
> (P25) vocoder [state of Michigan]
>
> All of these are called "Astro" systems.
>
> --
>
> The Scanner Dude
> Brian J. Cathcart - KE4PMJ
> South Florida Frequency & Trunking Guide - 6th Edition (On CD-ROM too!)
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