The NMOKHFUD25 is a high-frequency NMO mount designed for permanent surface installation. It requires a 3/4-inch mounting hole and includes a 17-foot length of UD (RG-58U Dual Shield) coaxial cable. This mount operates across a wide frequency range from 27 MHz to 6 GHz and can be configured for either low or high-frequency antennas by adjusting the center pin and insulator. It is designed to accommodate roof surfaces with a thickness from 0.03 to 0.1 inches. This versatile mounting solution is ideal for vehicular and fixed-site radio communication systems, and this model is supplied without a connector, allowing for custom termination.