Maritime VHF-AM Antenna

117-138 MHz – MADP117-138 (1Y42500)


The MADP117-138 antenna was designed for today’s latest VHF-AM communications platforms for maritime, military, commercial, and law enforcement applications.

The radiator element is designed for maximum durability and performance. The antenna radiator is sealed in a heavy duty fiberglass radome for mechanical stability and reliability in harsh environments.

Being ground independent, this antenna can be mounted on various maritime platforms (metal or non-metal) with no degradation of performance.



  • Ground independent
  • Single Input
  • Built to MIL-STD-810


Electrical Specifications

 Frequency: 117-138MHz

Polarization: Vertical

Impedance: 50Ω Nominal

VSWR: 2:1 Typical

Gain: ≥ 2dBi

Pattern: Omni Directional

              Azimuth 360°

              Elevation 72°

Power: 50Watts

Connector: Type N Female


Mechanical Specifications

Design: Dipole

Height: 50.5in. (1.3m) w/o extension

Diameter: 21⁄4in. (57.15mm)

Radome: Fiberglass

Weight: 5.5lbs. (205kg.)

Wind load: 150MPH Max (241kph)

Mounting: 1” 14 Thread Extension

Color: White/Black/Green/Tan/Grey