Directional antenna for extending the range of your system. The RE3-ACC-ALPA Active log periodic antenna; 470-960MHz makes the task of extending your range easier than ever. It features switchable 3dB and 10dB gain. And it can be mounted easily on a conventional microphone stand. Extend your signals range Use this powerful extender to send your signal even further. It is an active directional antenna with switchable 3dB and 10dB of amplified gain. This increases the desired RF signal whilst also rejecting unwanted RF signals. The ALPA extender can be mounted on a standard threaded microphone stand for easy placement. This unit should be used with decent COAX cables in order to get the best from it. Features Extends system range Switchable 3 dB and 10 dB of active gain Mounts on a standard threaded microphone stand Specifications Antenna type: Active UHF directional antenna Frequency band: 470 to 960 MHz Effective working angle: 100 degrees Antenna gain: Selectable 3 dB and 10 dB RF connector: BNC Color: Black Net weight: 11.6 oz. (328 g) Gross weight: 1 lb 11.5 oz. (780 g)