A good place to get all your electronics, parts, connectors, wire, and antennas and mounting stuff is www.mcmelectronics.com or call 1-800-543-4330. They ship to you next day or you can pick up at will call. They are in Centerville, Ohio.
We just go some #30-2155 UHF antennas @$20 bucks! Our Sales guy is going to try one this weekend, I'll let you know how it works out.
Here is the specs. http://www.mcmelectronics.com/conten...ts/30-2155.pdf