Tony,

Not sure where you are going with this.  I have seen and heard of antenna 
systems that used power dividers to connect two antennas to a single point 
with equal or unequal power division.  Usually used in buildings where the 
RF resource is on the top of the building and coverage is needed in 
basements and sub-basements.  Often one of the legs is radiating coax 
terminated in a unity gain antenna.  This could be connected to a duplexer 
output.  This has been done for quite a while and I'm sure that there are 
many on the list who have dealt with similar systems.

Voting systems on the other hand are systems where multiple receivers are 
connected to a voting selector which determines which of the multiple 
receivers has the best signal to noise ratio and selects that receiver.  The 
output of the selector then connects to whatever the user wishes.  Examples 
could be many receivers connected to a console with a single or multiple 
location talk back transmitter(s) under the control of a dispatcher on a 
simplex frequency; or feeding the output and corresponding COR to a 
transmitter on a second frequency in a repeater configuration.  Again this 
has been done for many years.

For more information check out some of the standard texts that are oriented 
to land mobile radio.

Milt
N3LTQ


----- Original Message ----- 
From: "Tony L." <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, March 01, 2007 8:56 PM
Subject: [Repeater-Builder] Diversity Antenna System ?


> Has anyone ever experimented with a diversity antenna configuration on
> a repeater?  That is, using 2 antennas, mounted at different
> building/tower locations, but connected to a single duplexer?
>
> I suppose a controller/router/voter of some sort would be necessary to
> insure that the antenna receiving the strongest signal would also be
> chosen for tx purposes?
>
> Thoughts?
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>

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