WB-Stinger-5.4 Vertical by Wireless Beehive 5.4 GHz Vertically Polarized Stinger (10 dBi) Stinger 5.4 Vertical FOR EXPORT/MILITARY USE ONLY; NOT FCC APPROVED FOR GENERAL USE IN U.S. Slip on an extra 10 dB (average) Extend your range without using a large reflector Boost signal levels for marginal customers Speed up your installs Narrows the pattern to 12 degrees Lowers Jitter The Fine Print: We have found the RSSI/dBm readings in the various models of Motorola Canopy equipment to be somewhat inaccurate and non-linear. If you slip a Stinger™ onto an SM you may or may not see a change of 10 dB in received signal strength. We do guarantee each Stinger™ to increase the gain by a minimum of 10 dB. In practice we see gains of 12 to as high as 14 dB measured by the network analyzer. But SMs often report lower increases. What you will see and can verify is a range increase. Testing has shown 5.4Ghz Stingers™ to work out to a distance of 9 miles. However a realistic expectation is solid performance at 5-6 miles. Specifications: Gain 10-12 dB nominal increase over bare SM 17-19 dBi total antenna system gain Beamwidth 12 degrees (3dB) F/B Ratio >30dB Cross Pol Reject >30dB Wind Load 26 lbs additional over bare SM @ 100MPH Weight 10 oz (nom)