The ADA-0086-I types are straight stub SMA ground dependent antennas. The gain is typ. 0 dB and the frequency bands covered are: ADA-0086-I 900/1800 ADA-0086Q-I 850/900/1800/1900 ADA-0086QU-I 850/900/1800/1900/2100 This is tony from EMI,a dist...