GSM stubby antenna 
This  dipole antenna is a quality robust antenna with high gain in small form factor.
 Connection is made via fixed right angle SMA connector with a hardened waterproof PU
casing, this antenna is the ideal GSM antenna for M2M devices.    
GSM stubby antenna general data
Dimensions (mm): 45 x 8
Temperature range: -40o C to +85o C
Coaxial connector : SMA/M RA reverse polarity
 
Technical data celluar
Supported band: GSM 850,900,1800,1900
Frequency  (MHz): 824~960 1710~1990
Impedance: 50 Ω
Gain: 0 dBi
VSWR: 2.3
Band  antenna efficiency
GSM 850,  10%
GSM 900 , 18%
GSM 1800,  33%
GSM 1900,  35%
UMTS 2100,  42%