Pryme AL-800 BNC Dual Band 144/430MHz High Gain Telescopic Antenna Booster for Walkie Talkies Telescopic AL-800 SMA Female and ordinary antenna included can be interchangeable and easy to disassemble and carry. Connector Type: SMA-F (Female). Band: Dual Band VHF/UHF. Frequency: 144/430MHz. Gain: 3.2dBi (VHF)/5.6dBi (UHF). Max Power: 50Watts V.S.W.R: Less than 1.5. Impedance: 50ohm. Diameter: 0.5cm. Telescopic antenna length: 22cm (retracted)/94.8cm (full length). Ordinary antenna length: 22.3cm. Bare ordinary antenna length: 16.3cm. Bare telescopic antenna length: 16 cm (retracted)/88.8cm (full length).