Paul, I have a 2 meter 20 watts out of the duplexer repeater with DB224 sharing 1-5/8" feedline at 1175 ft above ground with UHF DB408. I have Comet duplexers (really crossband couplers) at top and bottom. Been installed for 10 years since 1996. They both work great.
The UHF is in the commerical band. The only thing I worry about is the Comet duplexers. They are holding up, but wished we had gone with the commerical units that most often can handle 100 Ws per port, a real 100 Ws not like Ham specs. In the past I have had problems with continous higher power with the Comets and Diamond duplexers, but not on this system. It is a good way to get a site. Lots of UHF/800 MHz stuff up high and if you know someone with this who will let you share the feedline great way to go. Of course works well is all is Ham also. 73, ron, n9ee/r --- In Repeater-Builder@yahoogroups.com, "Paul Holm" <[EMAIL PROTECTED]> wrote: > > I realize that from time-to-time this subject has come up: the want of a commercial-grade dual band antenna. The DB314 is one option that has been mentioned before, but the gain figures are not what we'd like them to be. And we'd really like to find something other than a multiple-section ham dual bander. > > Our ham club is wanting to add 440 capabilities to our current repeater site. The tower is a golfball-on-a-tee style water tower, and we are allowed only one mounting location. So we find ourselves in this same situation. We are currently using a commercial fiberglass stick on the low end of it's 2:1 curve for VHF and we are allowed to replace it with whatever we want to pay for. hi hi > > Has anyone ever tried 'interlacing' a DB224 and a DB408 or DB420(or similar) on a common mast? and use suitable diplexers at the top and bottom ends of the line? or would there be too much interaction between the bays, using that physical arrangement? or would it result in goofy patterns? > > Or is the DB314 the only workable method of doing this? and is it worth it at ~1200 bucks? > > Thanks. > > > 73 Paul >
