Allen, Just for fun our club set-up a 250watt repeater w/o cans. We installed the transmit antenna on the roof top of the building. One floor down (its a tiered roof) we installed the receive antenna. We positioned the two antenna so that they were physically separated by the structure. The transmit antenna had full benefit of the highest point on the roof and the receive antenna had open views of about 270 degrees. We achieved about 100db attenuation. It was a compromise on receive but using the building structure allowed the two antennas to be about 70ft apart horizontally and 20ft vertically. It was a net experiment. We eventually installed six cans and used the receive antenna for another project.
So, maybe you could use two antennas. Pick a street corner and use the building on the corner as your attenuation device ;-) Good Luck, dave wa3gin www.w4ava.org
