N4-17 Series VOR/LOC Glide Slope Antenna

The N4-17 VOR/LOC/Glide slope antenna is designed for general aviation, commercial and military aircraft that operate up to Mach 1.0. The N4-17 is designed and qualified to provide a low-cost, lightweight, low-drag antenna for state-of-the-art avionics systems.

The antenna is not only T.S.O.'d, its performance parameters exceed the environmental specifications of MIL-E-5400 Class 3 equipment. Therfore, the N4-17 can be installed on single engine to jet engine aircraft.

The balanced loop design of the N4-17 assures an omnidirectional radiation pattern at the horizon to obtain the maximum signal for standard VOR and area navigation, which in turn providdes more receiving distance and reliable system performance.

The standard system is the N4-17/N, which consists of two antenna elements (N4-17-1/N), two feed cables and gaskets (U212-1 and U235-1 respectively), and a phasing coupler (N4-17-2). Dual output couplers (N4-17-4) are available as well.

Electrical Specifications:

• Frequency Range:
  VOR/LOC: 108-118 MHz
  Glide slope: 329-335.3 MHz
• VSWR: 5.0:1 max
• Gain: 0 +/- 2 dB
• Impedance: 50 Ohms
• Polarization: Horizontal
• Radiation patterns:
  VOR/LOC: Omnidirectional
  Glide slope: Forward Pointing
• Lightning Protection: dc short
• Power Handling: Receive Only

Mechanical Specifications:

• Connector: BNC Female
• Cable Length: 28 in
• Side Load: 17 psi
• Weight: 1.32 lbs

Environmental Specifications:

• FAA: C34e, C36e, C40c
• D0138 ENV. CAT.: AA5XXXXXHDXS