Wilson Electronics Lightning Surge Protector, F-Female (75 Ohm)F-Female Connectors. 75 Ohm Surge Protector for Cell Phone Signal Booster Outdoor Antennas. Frequency Range up to 3 GHz. Attenuation is less than 0.2 dB. Requires additional ground cable.F-female ConnectorsAttenuation Less Than .2dBFrequency Range: Up To 3ghzReplaceable Gas Discharge ElementSpecifications:Brand: weBoostModel: 859992Variation Attributes: Color: 75 Ohm Surge Protector (F-Female); Style: Protector; Color: 75 Ohm Surge Protector (F-Female)Size: appleLength (cm): 12.4Width (cm): 9Height (cm): 3.2Weight (g): 91