er Tx on a close spaced system at the
output of an 8 Tx combiner on UHF. If you get 11 watts at the antenna per Tx
consider it a great system.
Fred W5VAY
- Original Message -
From: "Tom Saunders" <[EMAIL PROTECTED]>
To:
Sent: Friday, August 05, 2005 9:38 AM
Subject: Re: [R
It should also be clarified that this is the major difference
between a hybrid ferrite combiner and a cavity combiner. The hybrid can be
used with any freq's in the specified band, no matter how close spaced (
technically 2 transmitters on the same freq is ok) , but at the cost of
majo
Tom Saunders wrote:
>>about 55% of each transmitter's
>>output gets burned up in a dummy load, each time two signals are
>>combined. Thus, eight 100 watt repeaters combined into one antenna will
>>have about 11 watts at the antenna.
>
>
> While it is true that aprox. 50% of the power from eac
> about 55% of each transmitter's
> output gets burned up in a dummy load, each time two signals are
> combined. Thus, eight 100 watt repeaters combined into one antenna
will
> have about 11 watts at the antenna.
While it is true that aprox. 50% of the power from each transmitter is
lost in the
I think his point was that each user would have effectively 11W. Yes,
the antenna would see 88W if all were transmitting at the same time.
Still, each frequency would only have 11W.
Joe M.
Kris Kirby wrote:
>
> On Thu, 4 Aug 2005, Eric Lemmon wrote:
> > One "dirty little secret" about transmitte
In reference to analog repeaters stand alone system only difference in
Commercial is where lets say for example you signed a Service provider
for a supplier take your Pick Motorola, Johnson, and few others I rather
not start a flamer.
So what you have is clintel of one of the names, your custom
On Thu, 4 Aug 2005, Eric Lemmon wrote:
> One "dirty little secret" about transmitter combiners using the popular
> hybrid/ferrite isolator design is that about 55% of each transmitter's
> output gets burned up in a dummy load, each time two signals are
> combined. Thus, eight 100 watt repeaters
Jed,
At a typical commercial site, a broadband antenna with modest gain feeds a
multicoupler that split the RX signal to each receiver. The multicoupler
(note that a "combiner" is a different animal, used on the TX side) usually
comprises a broadband amplifier followed by a 2, 4, or 8 port splitt
--- Jed Barton <[EMAIL PROTECTED]> wrote:
> Hey guys,
> Alright, educate me on this a little bit.
> I know of a few sights with ham repeaters, but they
> are combined with
> commercial stuff.
> How is that done?
> I mean, I know they use combiners, but do they
> really make some antennas
> that
Hey guys,
Alright, educate me on this a little bit.
I know of a few sights with ham repeaters, but they are combined with
commercial stuff.
How is that done?
I mean, I know they use combiners, but do they really make some antennas
that are tuned for both amateur and commercial?
I didn't think this
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