VOR/LOC/GS high performance navigation antenna set. Designed for mounting on the Consult your FBO or installation shop for best aircraft vertical stabilizer or helicopter tail boom. Features low weight/drag, tabular structure to minimize helicopter rotor "down wash" forces. Contains wide band/high efficiency electrical performance and DC grounding for lightning protection. Set includes a pair (2) of "towel bar" sensor elements each with a BNC output connector and a one-piece dual coax interconnect signal combiner harness with single BNC connector output. Provides for a single cable run to the avionics location. D20543 Antenna separately C20544 Combiner and Coax separately application information. Approved for light helicopter installations. Frequencies Covered 108-118 MHz (VOR/LOC), 329-335 MHz (GS) Specifications Electrical Frequency Radiation Pattern Omni Directional Receive Only Mechanical Weight Delrln mounts I Aluminium "Towel Bar" Polyurethane Enamel Environmental Temperature RTCA Environmental WARNING: Use factory supplied drawings and specifications for Installation. Refer to FAA AC 43.13-2B for Installation guidelines.