for the bc 898t scanner, what would be a great antenna for me to listen to the other half of montgomery county,pa. What i mean to say is...i live in the southeast part of the county and i wanna hear southwest...like limerick, upper prov..and other depts in that area...so what antenna can i buy that will mount to the base unit and let me hear southwest county dispatch from the southeast area?...scannermaster sells a 2.5db gain antenex one for 30 smacks...anyone reccommend a better one perhaps larsen\?