the ~850KHz split could be done with both hybrid and cavities, but in the real world, you're talking very high Q cavities. The Motorola T1500 series bottles in BP connection would not play well at this close spacing.
If you can find some very high Q cavities, that would be the best way to go. Else the hybrid method works pretty well, but with just over min 3dB loss per side in a two channel system. I see uhf hybrid systems sold on Ebay for $175 to $250 every so often. skipp025 atyahoo.com > "Steve S. Bosshard \(NU5D\)" <[EMAIL PROTECTED]> wrote: > When the 2 channels are around 2 to 2.5 mhz apart it is pretty easy to use > 2 duplexers, BpBr tuned to pass normally, but the reject is set normal on > one cavity, and to reject the second repeater tx, or rx on the second > cavity. > > > > If the two channels are 200 khz or less apart then a single duplexer tuned > mid band, and a hybrid combiner on the transmitters, and a splitter on the > receivers works pretty good not withstanding hybrid loss. > > > > At 850 khz it is a little more difficult. This combination might take 2 > BpBr duplexers plus a third cavity on the receive half of each duplexer. > May take some cut and try with a tracking generator. > > > > Good luck, > > > > Steve > > Nu5d Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
