آنتن GSM رومیزی 20cm 1    DimensionUnitmm                 20MM  2    Electrical Characteristics  21  GSM Antenna     No 	  Item 	  Specifications 	  Post Environmental Tolerance  1 	  FrequencyMHz 	  824896MHz  17101990 MHz  880960MHz  17101990 MHz 	  3 MHz  2 	  VSWRin BW 	  201 	    3 	  GainZenith 	  5 dB 	  05 dB  4 	  Polarization 	  Vertical 	    5 	  Impedance 	  50  	       22  Mechanical  No 	  Item 	  Specification  1 	  Cable 	  RG 174  1m  2 	  Connector 	  SMA  3 	  Plastic Housing 	  Black  4 	  Size 	  29200mm