- Designed to minimize bearing errors when receiving VOR and ILS signals
- Provides increased gain at the horizon, particularly during banks
- Discriminates against vertically polarized signals
SPECIFICATIONS
Airborne, True Center-Fed Loop, Navigation Antenna
Description: The N4-4 Antenna System has been designed to minimize bearing errors in the reception of VOR and ILS signals. 108 MHz to 122 MHz, 50Ω, BNC
Tags: Avionics,Antennas,VOR/LOC/GS,EACH
SKU: DM N4-4
Description
The DM N4-4 navigation antenna system has been designed to minimize bearing errors when receiving VOR and ILS signals. It provides considerably more gain at the horizon (particularly during banks) than do fuselage mounted “deerhorn” or “vee” antennas. It can discriminate against vertically polarized signals, and when properly installed on helicopters, it rejects rotor modulation which results in better signal to noise ratios with less errors.
The DM N4-4 Antenna consists of two (approximately semicircular) center-fed half-loops and cable harness. Because the DM N4-4 has been designed specifically for light planes and helicopters, lightweight rugged construction has been stressed. It is built of round magnesium tubing and weighs only 2 pounds.
FEATURES
Weight: 2 lb, without cable
Connector: BNC
Mounting: on opposite vertical surfaces of the aircraft
Frequency Response: 108 MHz to 122 MHz
VSWR: <5.0:1
Gain: 0 ±2dB
Impedance: 50Ω
Polarization Pattern: Omnidirectional in the azimuth plane. Approximately cos. q in the vertical plane
Efficiency: 95%
Power Handling: Receive Only
Environmental:
Military: MIL-E-5400, MIL-T-5422
FAA: TSO-C40a