[Trunkcom] MultiNet

Mon, 7 Jan 2002 16:19:58 -0500

I don't believe I misunderstood anything, just pointed out some things that
seemed different to me. I still don't where theres any real advantage,other
than cost, of doing so. Most of our local traffic is fire depts. and fire
dispatch. These radios ARE NOT limited to any one talkgroup,so they
essentially don't have a "home freq." if you will. That was the point I was
trying to make. Does Motorola make any more money for a large trunking
sysytem than it would if it sold the same amount of radios to a county for
the same purpose?

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Brian J Cathcart
Sent: Monday, January 07, 2002 10:37 AM
To: [email protected]
Subject: Re: [Trunkcom] MultiNet

On Sun, 6 Jan 2002 00:09:23 -0500 "SJ" <[email protected]> writes:
> --------Remember, if you have 3 channels in a system, there
> can only be 3 simultaneous conversations going on.------------
>
>  That's what I meant, really. I mean think about it, you have say 3
> channels,3 very busy channels at one given time. It just doesn't
> make any sense to put more than 3 agencies/businesses on that system,
> especially if one of them is public safety(I'm theorizing LTR here).

Steve you are misunderstanding the concept of trunking.   You have to
realize that ALL forms of trunking, whether LTR, Motorola, or EDACS has
the same limitation, that being the number of voice channels is the limit
to how many conversations you can have at once.  Your own local 5-channel
Motorola system can have only 4 conversations going on it at a time (one
channel is the control channel, 4 are voice channels).  Here in South
Florida a local 4-channel Motorola system can only have 3 conversations
going on it at one time (again, 1 control and 3 voice).  Trunking takes
advantage of the fact that normally not all agencies are going to all be
talking at the same time.  Under special/emergency conditions, the
systems can be overloaded, but that is true of an both an LTR system and
your local Motorola system.  The difference being, that your 5-channel
Motorola system only has 4 voice channels available, whereas a 5-channel
LTR system would have all 5 channels available.

> 3 years ago
> when we had the ice storm, I had 2 scanners going on the county trunk
system
> just to keep up. We had people using their old low band stuff just to
keep
> in touch, quite confusing.

Again this could happen with ANY form of trunking.  ANY turnked system
can be overloaded, especially the ones with fewer channels.  That is why
these system have queing, for those times when the system is very busy.

--

The Scanner Dude
Brian J. Cathcart - KE4PMJ
South Florida Trunking Guide - 5th Edition (On CD-ROM too!)
Palm Beach County Frequency Directory - 4th Edition (On CD-ROM too!)
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