Unfortunately, you really need a Mono-band antenna to get the most out of your height restricted situation. Hustler makes the G-6 ( Model G6-450-3 ) UHF Omni-directional antenna with 6 dbd of gain, If you can install the G-6 at your place, you might make up for the other stations lack of height above ground.. Also, low loss coax like LMR-400U and N-Connectors can go a long way in reducing signal loss.. Note: I noticed (after this post, duh..) in an earlier post you have installed a set of Yagi antennas to solve your problem. However, if you can accomplish the same results with a better Omni and better coax, you'll start to hear what you're missing with directional antennas.. Just my 2 cents... 73, Russ