The Fluke Networks EXTANT-RPSMA External uni-Directional Antenna with RSMA connector is an option used with the Fluke Networks AirCheck Wi-Fi Tester. Frequency Range: 2.4 GHz to 2.5 GHz and 4.9 GHZ to 5.9 GHZ: Minimum gain: 5.0 dBi in the 2.4 GHz band and 7.0 dBi in the 5 GHz band. Connector: Reverse-polarity SMA plug.