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According to their catalog,the TX-RX Model 28-66-02
duplexers are rated at 350 watts.
73,
Rich
Rich Poczkalski WB2DSS
In God we trust, all others we run NCIC
*************************************************
Two rules for success in life:
1) Don't tell people everything you
know.
2)
*************************************************
----- Original Message -----
Sent: Thursday, November 24, 2005 7:52 AM
Subject: Re: [Repeater-Builder] Re: Update: Looking for a UHF
Circulator and load
Was just quoted a price on the TX-RX duplexers, they were right about
$900.00 with a discount bringing them to about $750.00 in that ball park.
Actually, if I remember right, they were rated at only 200 watts.
Mathew
It
was a TxRx 4-can duplexer. The specs were 100dB,
and it made that but just
barely (102-103 is what I
measured). 1.1dB passband loss. I could get the
model
number, but I believe it's a stock model, just tuned
for the ham
band. They use RG142 throughout. The
connectors on the duplexer look like
TNC but I didn't
take any apart. These run to ordinary female Ns on
the
frame.
Let's hope the problem is really gone, but I'd
have
liked to try to recreate it, just to make sure that it
really was
fixed.
Bob M.
======
--- Coy Hilton
<[EMAIL PROTECTED]>wrote:
> Well Bob I'd bet the problem is gone for
good.
> There's nothing like
> having really good feed back from
your antenna to
> the area of your
> receiver with out going
through the receive side of
> the duplexer. It
> sounds like a
little item called a passive repeater,
> think about it.
>
> I'm interested in the 4 can duplexer, I would like
> to know
the
> make. Not bad for a 200 watt transmitter.
> AC0Y
>
> --- In Repeater-Builder@yahoogroups.com, "Bob M."
>
<[EMAIL PROTECTED]>
> wrote:
> >
> > First, I would like
to thank everyone who
> responded to
> > my original post with
suggestions, information,
> and
> > similar problems.
>
>
> > Here's an update to the situation.
> >
>
> Late Monday afternoon/evening, the coax/antenna
> was
> >
swept (from the bottom) with a site-master unit
> and no
> >
problem was found.
> >
> > There's an unused 800 MHz
vertical antenna mounted
> > near the UHF antenna, on the platform,
with coax
> > attached. Apparently the dummy load at the
bottom
> of
> > the coax for that antenna was either missing
or
> > defective, so another one was put on. The
>
repeater's
> > desense problem is completely gone now, even
with
> the
> > 200w PA and the 17dB gain preamp.
> >
> > I don't know if there was desense immediately
>
before
> > playing with that dummy load, nor if they restored
>
the
> > situation to what it was previously to check if
>
the
> > desense reappeared. For all we know, with the high
>
> winds and rain we had Monday, something up at the
> > antenna
(the jumper, for example) could have moved
> > enough to _cure_ the
problem, even temporarily.
> > Nothing else was done at the site on
Monday, but
> the
> > repeater is working as good as it was
when it
> first
> > went on the air.
> >
> >
If the desense condition returns, we'll obviously
> have
> > to
go looking for it again, but maybe a visit to
> the
> > top of
the pole would be in order.
> >
> > Anyway, my search for a
circulator is temporarily
> on
> > hold. Sure, it would be
desirable to have one, but
> not
> > absolutely necessary for
proper operation of the
> > repeater.
> >
> > Bob
M.
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