Just picked up an XTS5000 UHFR2, however it did not come with an antenna when I ordered it. Just looking for the best performing UHF antenna that will work best in the R2 band (450-520). Preferably OEM but it is not required. Also, I am not very interested in looking into the short stubby antennas that are less than two inches, instead I am looking for a good performer that is 5 inches or taller. Thanks.