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Multi-Band Satcom & Communications Antenna

240 to 400 MHz & 30 to 512 MHz

SKU: 21-50-75

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Multi-Band Satcom & Communications Antenna

The 21-50-75 is a rugged multifunction VHF/UHF, AM-FM, LOS and Satcom antenna designed for airborne, ground and shipborne applications. A high strength aerodynamic vertical shell houses a 30 - 512 MHz linear element that can be used for V/UHF line of sight “LOS” communications or UHF Satcom at low angles of elevation. This vertical shell also supports a “BatWing” shape horizontal element containing a pair of cross dipoles, connected to provide high angle, right hand circularly polarized UHF Satcom coverage. 

  • Aerodynamic design
  • High strength
  • Fully environmentally sealed
  • Hi and Lo angle UHF Satcom coverage
  • Full 30 - 512 MHz LOS communications
  • PRC-117G, AN/ARC-210 & AN/ARC-231 compatible
  • Low wingspan minimizes loading on aircraft structure
  • Drop on replacement for DM C 34B
21-50-75
Model # 21-50-75
Brand Cooper Antennas
Frequency

Hi Angle

Lo Angle

240 - 400 MHz

30 - 512 MHz

Gain

Hi Angle

Lo Angle

 

 

 

+6 dBiC

-20 dBi @ 30 MHz

-8.0 dBi @ 88 MHz

-5.0 dBi average @ 118 -174 MHz

+2.0 dBi average @ 225 - 512 MHz 

VSWR

Hi Angle

Lo Angle

 ≤ 2.0:1

≤ 2.5:1 

Impedance (nominal) 50 Ohms for both ports 
Power

Hi Angle

Lo Angle

 

 

200 Watts CW

50 Watts (30-88 MHz)

50 Watts (118-175 MHz)

200 Watts (225-512 MHz)

Polarization

Hi Angle

Lo Angle

Right Hand Circular

Vertical, Linear 

Antenna RF Connector

Hi Angle

Lo Angle

N Female

TNC Female 

Height 12 inches (305mm) max
Wingspan 13 inches (330mm) max
Weight 12 lbs (5.4kg) 
Fixing Holes 18 no. of holes each 0.213 + 0.007/-0.000 dia. (inches) 
ENVIRONMENTAL
Designed to Environmental 

MIL-E-5400 Class 2

MIL-STD-810 

Finish

  • Antenna - Urethane Lusterless Grey FED-STD 595 36173
  • Baseplate - Unpainted, Alocrom 
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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