[Scan-DC] Montgomery FD Mutual Aid

[Doug K.]

I wondered how they were gonna handle this - Mtgy is the only jurisdiction 
around here that's on digital, right?  Everyone else that's on 800 is 
analog?

Thanks Andy - I wish I understood this trunking and talk group business 
better tho!  :)

Regards,

Doug


>From: "Andy" <along@comcast.net>
>To: <scan-dc@mailman.qth.net>
>Subject: Re: [Scan-DC] Montgomery FD Mutual Aid
>Date: Mon, 28 Jul 2003 19:06:38 -0400
>
>Interesting and coincidental!
>
>I think I've just stumbled upon the answer to this.  I was just sitting 
>here
>listening to a Frederick Co. Mutual Aid response into MoCo and monitored 
>the
>TT TG 49180 operating in analog mode.  This TG was multi-selected with TT 
>TG
>3376, so a multi-cast patch was formed.  What I believe this translates 
>into
>is that Frederick County units must have an assigned TG on their own system
>which is patched into MoCo's ASTRO system on that 49xxx TG.  Since the 
>49xxx
>TG on the MoCo side is in analog only mode, its probably set up just for
>Frederick County units, or for that matter any other 800 MHz jurisdiction
>with an analog only TRS, like Carroll County, Alexandria and Arlington
>Counties (Ya never know).  I could be totally wrong, but that's how it
>appeared to me.  What's more is that last weekend I monitored TT TG49200 as
>a mutual aid analog only TG.  It may be setup as dynamic regrouping, but
>that's a little over my head on how that works.  So FDMA-4 might be that
>analog patch from Frederick Co. units to the MoCo ASTRO system operations
>TG's.
>
>Andy

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