GSM antenna | 2J664B reference mounting position frequency 2J664B any surface AMPS 824-894 /900/1800/1900/2100/2400MHz impedance gain VSWR polarization cable housing size working temperature 50 Ohms 2.2dBi <2:1 horizontal RG174 Dia 70mm x 15mm -40°C to +85°C http://www.2jantenna.co.uk GSM antenna | 2J664B GSM