Active Groundplane Antenna ABN00-32 for wireless microphone systems. This broadband UHF groundplane features vertical polarization and omni-directional radiation, pre-tuned to the 470–880 MHz switching window. It includes an internal booster delivering +11.5 dB gain and is powered via +12 V DC through the coax with 120 mA current. It terminates in an N-type female, mounts on a standard 3/8 in. screw, and weighs about 1.1 kg with a 78 mm diameter housing and 258 mm length.