For those who have knocked the Diamond RH77CA scanner antenna that doesn't work on 800 mhz, it is not meant to work on 800 mhz. You need the right antenna for the frequencies that it is cut for. You can't run a 4,000 hp locomotive engine in a Volkswagen, or a Volkswagen engine in a locomotive. My Diamond RH77CA works well in the 2 meter ham band for both receive and transmit, and also on the marine and railroad frequencies which it is cut for. An antenna cut for 800 mhz, is not going to suit my needs for operating in that frequency range. But for those who exclusively want to monitor in the 800 mhz range, this one's for you. The Radio Shack Model 20-283 800MHz Scanner Antenna : Scanner Antennas | RadioShack.com
. You shouldn't have a problem monitoring with this one. The right tool for the right job and purpose.