G21BW301111 Datasheet, PDF (5/21 Pages) List of Unclassifed Manufacturers – G21.W Hercules Gen.II Penta Band Cellular Antenna Screw-mount - White Version GSM/GPRS/CDMA/EVDO/UMTS/HSPA/WCDMA

4. ANTENNA PARAMETERS
4.1 Return Loss
Figure 2. Return Loss of G21 Hercules antenna in free space
Figure 3. Return loss of G21 Hercules antenna on 30 cm metal plate.
SPE-12-8-155/C/EZ Page 5 of 21