DM N4-4 Navigation Antenna | 108 MHz to 122 MHz, 50Ω, BNC instruments-oil Contoured ear seals are extra

Contoured ear seals are extra thick

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To thousands of air men and women today

DM N4-4 Navigation Antenna | 108 MHz to 122 MHz, 50Ω, BNC instruments-oil Contoured ear seals are extraDM N4 4 Navigation Antenna 108 MHz to 122 MHz, 50, BNC The DM N4 4 navigation antenna system has been designed to minimize bearing errors when receiving VOR and ILS signals. It provides increased gain at the horizon, particularly during banks, than fuselage mounted deer horn or vee antennas. It can discriminates against vertically polarized signals, and when properly installed on helicopters, it rejects rotor modulation which results in better signal