Jed, There are several options, all of them expensive. Whether you go the hybrid-ferrite route or the cavity-ferrite route depends not only upon the frequencies of your two repeaters, but also those of other transmitters at the site. Either way, you must separate the two receivers from the two transmitters.
A combiner is used to feed both transmitters to one antenna so that each transmitter sees a good 50 ohm match to the antenna, but is isolated from the other transmitter. When a hybrid is used, you lose slightly more than half of the power from each transmitter. That is, when you combine two 100 watt transmitters using a hybrid, each transmitter now has about 40-45 watts going to the antenna. The cavity route is better, but is more costly. A multicoupler is used to split the receive frequencies from a separate antenna to the two receivers. There will be a preselector or bandpass cavities ahead of an amplifier, and a splitter to divide the signal among the receivers. Since you must have two antennas and the equivalent of two duplexers to make either system work, it is very likely cheaper to simply use two antennas- one for each repeater. Even if you have two commercial-grade repeaters, you almost certainly will need ferrite isolators and low-pass filters on both machines. Choose wisely... 73, Eric Lemmon WB6FLY > Jed Barton wrote: > > Hey guys. > OK, this is a bit greek to me, so your info is appreciated. I have 1 site and > 2 repeaters. We don't have the space to put them on separate antennas... > Could I run 2 UHF repeaters on 1 antenna?... Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
