[TrunkCom] Control Frequency Only Mode

Thu Oct 27 11:39:48 EDT 2005

That was the situation here.  The hospital was using conventional, and
there was an LTR within range of this system.  Thank God for PL tones, but
that didn't change the fact that we had the LTR data burst hetrodining
with the conventional frequency, and the problem wasn't as bad as it
seemed from home at the hospital with a radio using th PL tones they were
using.

On Thu, 27 Oct 2005, JERRY NONE wrote:

> We have one UHF LTR that is Hospital related.
> The problem is that one of the frequencies is used by
> a business.  Makes for interesting listening when they
> both key up on that frequency since my radi oscanner
> is in range of both of them.
>
> --- Jeff Kenyon <at649 at tcnet.org> wrote:
>
> > Right, and that is the case around the Detroit area.
> >  The one 800 MHz
> > frequency that I thought originally was a trunked
> > system for AMR is hardly
> > used, and I have heard that they may be pulling out
> > of this area
> > altohgether, but for now they are just shuttling
> > patients around.  We have
> > one system here that is labeled as unknown on
> > radioreference.com, and is a
> > VHF system, but the frequency listed I know is just
> > a paging frequency, at
> > least on my side of town, and I've never heard any
> > LTR or other type os
> > data there, and the LTR system I mentioned earlier
> > last night is gone, and
> > was the only one I know of on 800 MHz, though I
> > think we may have a couple
> > of LTR systems on 900 MHz, but a vast majority of
> > LTR systems here are
> > UHF, in the 420-424 MHz range or around 451-453 &
> > 461-464 which all a long
> > has been allocated for business, and in my opinion i
> > don't think the FCC
> > has done as well as they could with allocating these
> > bands, in terms of
> > distances to ajacent users.  We had an LTR system
> > that was using our
> > hospital's security frequency of 461.375.  Our
> > medical center uses htis
> > freq conventionally, but without a radio with a PL
> > you used to hear  te
> > data burst fromthe LTR system.
> >
> >
> >
> >
> >
> > On Thu, 27 Oct 2005, JERRY NONE wrote:
> >
> > > We have one VHF LTR TRS in the Cleveland Metro
> > Area,
> > > tons of UHF ones.  Also one 900 LTR TRS that I can
> > > think of.  One UHF LTR uses one frequency on one
> > site
> > > and two on the other.  I mostly hear the Ambulanc
> > Co
> > > on it but rarely do I hear anything else.
> > > Plus it seems that alot of private ambulance
> > companies
> > > use LTR.
> > >
> > > --- Jeff Kenyon <at649 at tcnet.org> wrote:
> > >
> > > > Right, though a lot of pages like
> > radioreference.com
> > > > will list any system
> > > > regardless of type/useage.  Some information for
> > > > some federal and military
> > > > systems is restricted, but around my area a
> > lone,
> > > > and other parts of the
> > > > state there must be a dozen or more LTR systems
> > that
> > > > are used by
> > > > businesses or SMR users, and these are mostly
> > UHF
> > > > systems in my area.  We
> > > > have two multi-net systems in Michigan that are
> > both
> > > > supposed  to be
> > > > updated to P-25, but last time I was up near the
> > > > area that they are in
> > > > they were still LTR.
> > > > 	Also, some LTR systems only use maybe one or
> > two
> > > > frequencies and
> > > > that is it.  In once case I knew with my old
> > school
> > > > bus company they used
> > > > a two-cite LTR system with one frequency for
> > each
> > > > cite, and the reason for
> > > > two cites was because they were contracted to
> > cover
> > > > a large portion of
> > > > Detroit.  They are on conventional 900 MHz freqs
> > > > now, as their LTR freqs
> > > > are now owned by Nextel.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On Wed, 26 Oct 2005, JERRY NONE wrote:
> > > >
> > > > > Well know the LTR part I can asnswer I think.
> > > > > This is because most scannists like to listen
> > to
> > > > > Public Safety and/or Public Service.
> > > > > Most LTR systems are used for businesses with
> > the
> > > > few
> > > > > expections out ther that are use for Public
> > Safety
> > > > >
> > > > > Didn't Opto make something to help with that?
> > > > >
> > > > > Also on the FCC Adanced License search when
> > can
> > > > plug
> > > > > in a frequendy search and it will tell you if
> > it
> > > > is
> > > > > Trunked or NOT.  It will NOT tell you if it is
> > > > MOTO,
> > > > > EDACS, or LTR though.
> > > > > --- Jeff Kenyon <at649 at tcnet.org> wrote:
> > > > >
> > > > > > Hi Tom and the group.  I am surprised at
> > thisas
> > > > I
> > > > > > thought that the lowest
> > > > > > freq was reserved for the CW ID, which is
> > > > something
> > > > > > else that our system
> > > > > > has never done.  I can also tell you that
> > when
> > > > our
> > > > > > system was brought on
> > > > > > line for testing and training in 2001,
> > because
> > > > of a
> > > > > > lot of security
> > > > > > reasons and due to internal term oil with an
> > > > > > individual that I won't talk
> > > > > > much about here on this list, those
> > beginning
> > > > > > activities were done
> > > > > > exclusively by Motorola and the dealer here
> > in
> > > > the
> > > > > > Detroit area.
> > > > > > 	I've also noticed that with LTR system
> > > > information
> > > > > > that is out
> > > > > > there it is harder to find exact LCN
> > > > information.
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Wed, 26 Oct 2005, Tom Swisher wrote:
> > > > > >
> > > > > > > Jeff Kenyon wrote:
> > > > > > > > Hi Tom and the group, while we are on
> > the
> > > > > > subject of control channels, my
> > > > > > > > local system in Grosse Pointe here is
> > the
> > > > only
> > > > > > one I konw of that the
> > > > > > > > control channel goes from lowest to
> > highest
> > > > in
> > > > > > frequency range.  From
> > > > > > > > 866.5375 to 867.625, these are the first
> > > > four
> > > > > > control channels, and they
> > > > > > > > rotate daily, and all the other systems
> > I
> > > > have
> > > > > > tracked have had the last
> > > > > > > > several freqs as control channels.  Why
> > > > would
> > > > > > this be that one with the
> > > > > > > > lowest freq would be the control
> > channel?
> > > > > > >
> > > > > > > That's what was chosen when the system was
> > set
> > > > up.
> > > > > > Any licensed trunking
> > > > > > > frequency could have been used, what you
> > have
> > > > is
> > > > > > simply what they chose.
> > > > > > >
> > > > > > > Tom WA8PYR
> > > > > > > --
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
> -----------------------------------------------------
> > > > > > > Tom Swisher, WA8PYR
> > > > > > wa8pyr-scan at sbcglobal.net
> > > > > > >   "Restriction of free thought and free
> > speech
> >
> === message truncated ===
>
>
> ========================================================================
> Southwestern Cuyahoga County Ohio, Parma Ohio & Strongsville Ohio Radio Scanner Group:
> http://groups.yahoo.com/group/Southwest_Parma_Strongsville/
> ------------------------------------------------------------------------
> County Of Medina Ohio County Scanner Group:
> http://groups.yahoo.com/group/medinascanner/
> ========================================================================
>
>
>
>
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