Marine Brodband Antenna

100-400 MHz MAMP100X4 (1Y00117)

The MAMP100X4 is a ground independent monopole antenna designed for marine operations. The UM002 mounting bracket facilitates mounting on all sloping surfaces from 0° (horizontal) through 90° (vertical).

The antenna and mount are designed to meet severe marine environments. Optimum compromises have been made in the antenna “matching” to permit acceptable performance under a wide variety of “near field conditions”.

The radiator is encased in a high-impact fiberglass tube which is foam-filled for stability and strength. The base is aluminum, anodized to MIL-A-0625. For corrosive and water protection the antenna is overall coated with Prolane-T flat black two part polyurethane.


  •  Frequency Range: 100-400 MHz
  •  Gain: Unity
  •  VSWR: < 2.5:1 Typical
  •  3.5:1 Maximum
  •  Input Impedance: 50 Ω Nominal
  •  Power: 50 Watts CW & PEP
  •  Polarization: Vertical
  •  Radiation Pattern: Azimuth: 360°
  •  Elevation: 90°
  •  Input Connector: Type N Female


  •  Overall Height: 37 in. (0.94 m)
  •  Net Weight: 3 lb. (1.36 kg)
  •  Color: Black/Green/Tan/Grey
  •  Mounting: Six 1/4” (6.35 mm) holes equally
  •  spaced on a 3 1/16” (77.79 mm)
  • diameter circle.