Robodo Electronics GSM2DBi GSM Magnetic Antenna SMA 900/1800MHz RG174 Cable 3M Long This antenna is designed for gsm gprs 900/1800mhz system of communication terminal system. The antenna is structure compact and convenient for easy installation. Commonly used in gsm repeater, gsm sensor, gsm module and gsm modems. Electrical specifications: frequency range -mhz. 800Mhz-960mhz,. 1880Mhz-1930mhz. (V. S. W. R ≤ 2. 0 Gain-dbi 2. 0 Polarization vertical impedance- Ω 50 maximum input power-w 10). Mechanical specifications: connector sma male. 3 Meter wire length. Radom material metal. Radom color black. Operation temperature- -30~60. Humidity- percent 5~95. Magnetic base.