Okay....I would assume that it would be necessary to add Babdpass filters additionally after the circulators
>From: "Gregg Lengling" <[EMAIL PROTECTED]>
>Reply-To: Repeater-Builder@yahoogroups.com
>To:
>Subject: RE: [Repeater-Builder] use of Bp/Br duplexer as 2 channel combiner
>Date: Fri, 19 Dec 2003 10:44:58 -0600
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>We Have two repeaters at one location using two antennas and 2 duplexers,
>but because of the high-powered UHF paging TX we got too much desense on the
>top antenna for receive so we split to make the top TX only and the lower RX
>only. We had 2 micor stations with 2 TX/RX duplexers. By retuning the
>notches and then combining the RX cavities from each duplexer to the lower
>antenna and combing the output of the TX cavities to the top antenna we
>ended up with an excellent system. However if you are running a station
>that doesn't already have a circulator (it's integral in the micor 70 watt
>stations, one of ours was a 250 watt micor, so we added a circulator to the
>output) you will need to add the circulators to avoid mixing in the amps
>between the two transmitters.
>
>
>Gregg R. Lengling, W9DHI, Retired
>Administrator http://www.milwaukeehdtv.org
>K2/100 S#3075 KX1 S# 57
>Politics is the art of appearing candid and completely open, while
>concealing as much as possible. -States: The Bene Gesserit View
>
>
>
>-----Original Message-----
>From: n1ofj [mailto:[EMAIL PROTECTED]
>Sent: Friday, December 19, 2003 9:40 AM
>To: Repeater-Builder@yahoogroups.com
>Subject: [Repeater-Builder] use of Bp/Br duplexer as 2 channel combiner
>
>Has anyone ever used a Bandpass/reject duplexer as a transmit
>combiner. As an example, using one port set up as a pass on Frequency
>A, reject on frequency B, and the other port to reject frequency A
>and pass Frequency B? Any thoughts on this would be appreciated.
>Thanks,
>Dave N1OFJ
>
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