Type: antenna Model: sf-20 Frequency range: 144 / 430 (MHz) Impedance: 50ohm Length: 6.5cm Gain: 2.15dB Antenna Type: Soft mini antenna Band: dual band ~ UHF / VHF Suitable frequency range: 136 ~ 174 MHz / 400 ~ 520 MHz Maximum power: 10W V.S.W.R < 1.5 Dimensions: 2.76 in x 0.59 in x 0.59 in (7.0 cm x 1.5 cm x 1.5 cm) Weight: 0.56 oz (16 g)