If my life was dependent on it and it was make shift or nothing I
will go with make shift any day!
I Have built emergency repeaters from HTs before. In an emergency
You cant wait for the slow moving dog response of a chief, a city
manager ect. to order you a repeater, and a manufacturer to build it
and to get it shipped by turtle back express. You have to have
something NOW! I was involved with public safety communications for
over ten years. I've seen Police departments go totaly with out
communications in a matter of minutes. It's a spooky situation to be
in, not to mention how it feels for the Police Officer. In this day
and time they can't be with out communications for more than a few
seconds. Just think how much NEXTEL is going to pay to fix the
situation that they're in with public safety communications.
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon <[EMAIL PROTECTED]>
wrote:
> Denny,
>
> The R1225 is just the full-duplex transceiver that is in a GR1225
or
> RKR1225 repeater cabinet. It is exactly the same size as a
Maxtrac or
> GM300 dash-mount mobile radio. Since it has a built-in
controller, all
> you need is a duplexer and the connecting cables and you have a
tactical
> repeater. I have done this, and it works very well. There are
many
> issues to consider when creating a full-duplex repeater from two
simplex
> handheld radios, and I don't think you should pursue such a
solution-
> especially since this is intended to be used where people's lives
may be
> at risk. A PAC-RT is not appropriate for this application.
>
> 73, Eric Lemmon WB6FLY
>
> Denny wrote:
> >
> > Thanks for the input. It is 150MHz and we would have a 5Mhz
split.
> > What is the best process for shielding the two radios? Are there
> > cases out there or some foil type products? What would happen
if we
> > just connected to the two radios together and separated the
antennas?
> >
> > I looked at the R1225 and it is a little big but may work if need
> > be. Would a Motorola PAC RT work?
> >
> > Denny
> >
> > --- In Repeater-Builder@yahoogroups.com, Eric Lemmon
<[EMAIL PROTECTED]>
> > wrote:
> > > Denny,
> > >
> > > The HT1000 is an excellent radio by itself, but its plastic
case
> > offers
> > > no shielding whatsoever. It is possible to construct a
compact low
> > > power repeater with the HT1000 (or any two commercial quality
> > portable
> > > radios) if each radio is enclosed in a tightly-shielded box,
with
> > all
> > > audio and control leads brought out through coaxial filter
> > capacitor
> > > terminals. The antenna lead would need to be brought out
through a
> > > separate bulkhead connector.
> > >
> > > Once you have a completely shielded transmitter and a
completely
> > > shielded receiver, connect them to a compact (mobile) duplexer
with
> > > double-shielded cable such as RG-400/U. You will need a
> > rudimentary
> > > controller to handle the simple repeater functions. I am
assuming
> > that
> > > the pair you intend to use in the 150 MHz VHF band has a 5 MHz
> > split; if
> > > it is less, a mobile duplexer won't work.
> > >
> > > It would be a lot easier to use a 10 watt Motorola R1225
repeater
> > > transceiver, instead of two separate radios.
> > >
> > > 73, Eric Lemmon WB6FLY
> > >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
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