Jason, There a bunch of products on the market that will do what you need. Most of the time they are called diplexers, but sometimes they are named as duplexers.
For the best results you would want a combining unit with the lowest loss (less than 0.5 db). Probably the best ones around are from RX-TX. You would only need the bottom half of the set. Here is the link: http://birdtechnologies.thomasnet.com/viewitems/components/crossband-couplers?&forward=1 If that is out of your price range, then you can use some of the lower cost/quality units from Diamond or Comet available at most ham stores in the $50 range. Stay away from any models that have coax already connected. It's usually cheap RG-58 or RG-8X and not suitable for duplex operation. Since these are made for the ham market, you'll probably end up with an adapter or two. I've used the Comet CF-4160K with decent results. Dwayne Kincaid WD8OYG > Here is what I have to deal with. > > I have a HOA, and I am allowed on antenna. At this point I have a two meter > repeater, Micor 100watt, and want to add a 70cm repeater 30watt. I would > like to use a dual band antenna for both systems. > > What should I use to mix the two? A good duplexer? Or is there a more > professional way to do this? > > I am willing to spend some money for good performance. > Thanks > -Jason >
