I have seen several posts about handheld antennas but none that rererred specifically to an antenna for monitoring APCO 25 digital systems. I have a BCD396T and replaced the original antenna with Radio Shack's 800 mhz antenna, which made a slight improvement but I know better antennas are available. I have a telescoping antenna that works great for VHF and UHF, which I dont listen to very much. What would be a good antenna for listening to APCO 25 systems?