Sinclair's patented concealed bumper mount antennas SHA311 series are designedfor law-enforcement vehicles. The antennas are hidden inside thebumper andweatherproofed. The bumper covers must be plastic. Featuring a uniquemodulardesign that integrates all the components into a compact waterproofhousing makingit possible to install the antenna with minor modifications to thebumper. Theseantennas are mounted with simplicity and ease beneath the bumpercover therebytotally concealing the antenna from sight. A fine-tuning adjustmentpermitsperformance optimization during installation.

Attention: The antenna must be installed properly following theinstallationinstruction. For some unique vehicles, please contact Sinclair salesrepresentative orCSR for custom designs to achieve the optimum performance. Dualantennas (one inthe front bumper and one in the rear) can be used for better Omnicoverage. Theantenna must be installed and weatherproofed properly following theinstallationinstruction. The phasing harness and the joints to the two SHA311antennas are notweatherproofed, so they must be placed inside the vehicle.