The GMRS-POINT5 / UHF optimizes your GMRS radio by delivering the best signal performance throughout the programmed channels. Measuring a total of only 12.5", the POINT5 antenna packs big performance in a small size. Functions on any frequency between 406-470MHz, including GMRS. Molded high heat ABS mounting base features silver soldered connections, gold plated push pin contacts and o-ring. For optimal performance, we recommend a ground plane surface mounting such as a metal roof, which aids in signal performance. Please refer to our Tech Installation Guide for proper antenna placement, preparing the surface area, and installation.