Find an old UHF television translator/transmitter. Figure out which radio shop does the countys translators, and make friends with them the first day.
Any thing made by Larcan-TTC will have at least 1 circulator, there are at least 3 in the newer XLS series. These will retune nicely to the UHF band. To make your combiner take 2 of them and connect this to a "TEE" You should see about 2-3 dB of loss per transmitter. For filtering you will need to construct an interdigital band pass filter. If you are lucky the one in the translator will work fine with some tweaking to bring it into band. Always follow a circulator/combiner with some kind of harmonic filter. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
