The X6000A from Diamond Antenna is a Base Station Antenna with Frequency 144 to 148 MHz / 435 to 450 MHz / 1260 to 1300 MHz, Frequency Band 1 144 to 148 MHz, Frequency Band 2 435 to 450 MHz, Frequency Band 3 1.26 to 1.3 GHz, Gain 6.5 to 10 dB. More details for X6000A can be seen below.
