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GPS/UHF/MUOS SATCOM & VHF/UHF LOS Antenna

240 to 380 and 30 to 520 MHz L1

SKU: 21-54-49

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GPS/UHF/MUOS SATCOM & VHF/UHF LOS Antenna

Combining highly efficient “droopy dipoles” with a wide band, line-of-sight linear element, the 21-54-49 provides Hi-Lo angle UHF Satcom from a single connector plus a separate VHF/UHF/EPLRS element in a single airborne antenna. In addition, this antenna includes an L1 stacked patch active GPS element.

Element shaping and matching of the circularly polarized dipoles provides UHF Satcom coverage right through the UHF and MUOS band with useable radiation and gain typically from zenith down to 20 degrees or less above the horizon. The robust design is suitable for helicopter and fixed wing aircraft operating up to 450 knots

  • Suitable for helicopter, vehicular, fixed and mobile applications
  • Covers UHF Satcom and MUOS as well as VHF/ UHF Line of Sight (LOS) and Active GPS
  • All Weather operation  Wide Angle pattern coverage without Hi-Lo switching
  • 200 Watts CW Power handling for Satcom
  • Designed to MIL-STD-810
  • SINCGARS performance exceeds AS-3191 per MIL-DTL-85670C 
21-54-49
Model # 21-54-49
Brand Cooper Antennas
Frequency

LOS

Satcom

GPS

30 - 520MHz

240- 380 MHz

L1

 

LOS

 

 

 

Satcom

 

GPS

 

≥ -22 dBi @ 30 MHz

≥ -9 dBi @ 88 MHz

≥ -3 dBi (average) 118 - 174 MHz

≥ 0 dBi to +3 dBi 225 - 520 MHz  

≥ +6.5 dBiC @ Zenith

≥ 0 dBiC @ all elevation angles above +25°

≥ +3 dBiC @ Zenith 

+33 dB (pre-amp) 

VSWR

LOS

 

Satcom

GPS

30-449 MHz ≤ 2.5:1

450-520 MHz ≤ 3:1

≤ 1.75:1

≤ 1.5:1 (antenna)

Impedance (nominal) 50 Ohms
Power

LOS

 

Satcom

GPS

50 Watts VHF

200 Watts UHF

200 Watts

1 Watt 

Polarization

LOS

Satcom

GPS 

Linear

Right Hand Circular (maximum at zenith) 

Right Hand Circular (maximum at zenith)

Connector

 LOS

Satcom

GPS 

TNC Female

N Female

TNC Female

DC Power for GPS Pre-Amp 2.5 - 24 V <50 milliamps Typical
Overall Height 12 inches 
Weight 6.1 lbs max 

Finish

  • Antenna - Urethane lusterless Black
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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