This in-line spice connector is much different than the standard VHF/UHF connector because the internal components are designed for high frequencies. The center coax conductor indexes into a close-tolerance tube that is resilient (spring) brass and is gold plated. The close center-tube tolerance assures a tight connection, the gold plating assures a good electrical connection and the overall performance is greatly improved over standard designs. Internally, the center conductor tube is insulated from the inner skin of the barrel by a maximum air gap which results in much less RF loss. Insertion loss is extremely low and not really necessary to consider in complex systems. It is rated for 0 MHz to 3 GHz. This in-line spice connector is intended for outdoor use. Rubber weather seals on each side provide an added layer of moisture resistance. DIRECTV approved.