Hi Ken,
Shouldn't be a big problem if both repeaters have both
physical and electrical distance from each other. Both
would probably require dual port (min) circulators -
isolators and individual antennas with the mentioned
physical and electrical isolation.
The best option is a trade and also depends on
where you can put the antennas on the tower. You can
do it all on one antenna, but you'd be stuck with
using a hybrid and a net loss of 50% (min) power.
If you'd like the best receive option, duplex both
receivers off a top antenna with one transmitter.
Run a lower antenna for the second transmitter.
The frequency spacing would normally require a one
antenna hybrid, which eats about 50% of your power
into a termination or load port. Smart money would
just add a second antenna for the second transmitter.
cheers,
skipp
www.radiowrench.com/sonic
> Ken Arck <[EMAIL PROTECTED]> wrote:
> Hi folks
> Imagine this scenario. 2 quality, UHF repeater colocated at
> the same site. Both repeaters are higher power ( > 50) out
> of duplexers, duplexers are high quality BP/BR types. Here's
> the kicker - they're spaced 25 Khz away from each other but
> not inverted from each other.
>
> Now, theory is one thing as to the interference potential
> without resorting to mulicouplers and combiners. But what
> is the real world problem potential? Anyone want to take
> a stab at this one?
> Ken
>
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