Compact and directional Yagi antenna for GSM Cellular applications. Frequency 900 / 1800MHz, Active Gain: +11dB. VSWR <1.5:1. RG58 Connecting Lead. 50 Ohm impedance, maximum Power 60W. All Aluminium, ‘U’ Bolt Mount, Wewnętrzne/zewnętrzne = Zewnętrzne, Obs