Receive antenna should be the highest, but 40 feet is probably not enough isolation.
How far do you need coverage for the repeater? It would be cheaper to use a duplexer and then you can have the best of both worlds. Good receiver and good transmitter range. Butch, KE7FEL/r To: [email protected] From: [email protected] Date: Sat, 27 Jun 2009 21:01:58 +0000 Subject: [Repeater-Builder] Where to install my repeater antennas This isn't the most difficult question to answer, and I figure it can be answered relatively easily. I currently over the past few weeks constructed a GMRS repeater for my neighbor hood to use. It is constructed of 2 maxtrac radios one set at just 30 watts tx. I plan to use 2 antenna's so no duplexer is needed with some good Heliax cable running at least to the TX antenna. I have 40 ft of tower that I plan to mount the antennas on. One antenna is a Celwave (RFS) 6db gain antenna. And the other is just a plain 1/4 wave NMO style mount antenna. Which is the best way to install these antennas on my repeater? Celwave on the transmit end and at the top, or 1/4 wave on the Transmit and celwave on the receive? Also which antenna should be mounted on top of the tower?
