The X50C2 from Diamond Antenna is a Base Station Antenna with Frequency 144 to 148 MHz / 435 to 450 MHz, Frequency Band 1 144 to 148 MHz, Frequency Band 2 435 to 450 MHz, Gain 4.5 to 7.2 dBi, Power 200 W. Tags: Monopole. More details for X50C2 can be seen below.