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Magnetically Mounted UHF Satcom Antenna

225 to 400 MHz

SKU: 20-30-29

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Magnetically Mounted UHF Satcom Antenna

The 20-30-29 is a combined Hi-Lo angle UHF Satcom Antenna designed for magnetic mounting on a ferrous military vehicle roof, shelter or housing and on non ferrous platforms via a 4 hole CECOM mounting plate, having four 7/16 inch dia. holes on 4.5 inch circle.

The antenna comprises two co-located elements; a circularly polarized “turnstiled” cross-dipole and a linearly polarized broadband monopole. The two elements have separate RF feeds and by manual selection of either, full hemispheric pattern coverage is provided.

The low angle is intended for elevation angles up to about 45° and the high angle for approximately 45° to zenith.

Construction is from rugged fiberglass, foam-filled for structural integrity and prevention of moisture ingress with aluminum alloy dipole elements and base housing. A powerful magnet sits inside the base housing, which also provides support for the two coaxial connectors. 

  • Instant installation on Steel roofs
  • Suitable for vehicular, fixed and mobile applications
  • High integrity magnetic mount
  • Robust Construction
  • Hemispherical radiation pattern coverage with separate high and low angle elements
  • All Weather operation
  • 200 Watts CW Power handling
  • Designed to MIL-STD-810 environmental requirements
  • CECOM 4 hole mounting plate for non-ferrous platforms 
20-30-29
Model # 20-30-29
Brand Cooper Antennas
Frequency

Lo Angle

Hi Angle

225 - 400 MHz

225 - 400 MHz

Gain

Lo Angle

Hi Angle

+3 dBiL (Typical)

+8 dBiC (Typical) 

VSWR

Lo Angle

Hi Angle

≤ 3.0:1 

≤ 1.5:1 

 

Impedance (nominal)  50 Ohms
Power 200 Watts
Polarization

Lo Angle

Hi Angle

Linear 

Right Hand Circular (maximum at zenith)

Operational Temperature  -54°C to +71°C  
Antenna RF Connector

Lo Angle

Hi Angle

TNC Female

N Female

Overall height  12.5 inches (318mm)  
Element height  11.5 inches (292mm)  
Dipole span  20 inches (508mm)  
Element Diameter  2.25 inch max (57mm) 
Weight   4.2 lbs (1.9kg)  

Finish

  • Antenna - Matt Desert Tan Urethane FED-STD-595, 33446
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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