Cisco Product Number: S2403B (Cushcraft - see below) Product Description: 2.4GHz 5dBi (3dBd) Omnidirectional Fiberglass Antenna Many of these antennae will ship with the Cushcraft label. They are the same as Cisco Product Number AIR-ANT2506.Compatible with: Any 2.4-GHz Cisco Aironet radio device with an RP-TNC connector. Check with us for further compatibility.Specs:Antenna type: DipoleOperating frequency range: 2.4- to 2.84-GHzEnvironment: Indoor/outdoorNominal input impedance: 50 OhmsVSWR: Less than 2:1, 1.5:1 nominalGain: 5.2 dBi (3dBd)Polarization: Linear, verticalE-Plane (3dB bandwidth): 36 degreesH-Plane (3dB bandwidth): OmnidirectionalCable length and type: 3 feet - RG-58Dimensions: 11.5 in x 1.125 in.Mounting: Mast 2 inches maxOperating temperature range: -22