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Multi-function UHF/VHF, Link 16 and Satcom Antenna

240 to 400 MHz, 30 to 512 MHz, 900 to 2000 MHz

SKU: 21-50-77

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Multi-function UHF/VHF, Link 16 and Satcom Antenna

The 21-50-77 is a rugged multifunction VHF/UHF, LOS, C/D Band Data Link and UHF Satcom antenna designed for airborne 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 “Bat-Wing” shape horizontal element containing a pair of cross dipoles, connected to provide high angle, right hand circularly polarized UHF Satcom coverage.

A small wideband discone on the upper batwing surface provides 900-2000 MHz coverage for LINK16, MIDS, JTIDS and other C/D band systems. 

  • Hi and Lo angle UHF Satcom coverage
  • Full 30 - 512 MHz LOS communications
  • Wide Band Link16/JTIDS/MIDS
  • PRC-117G, AN/ARC-210 & AN/ARC-231 compatible
  • Low wingspan minimizes loading on aircraft structure
  • Fixing holes compatible with 437S1-H
  • Designed to MIL-STD-810 Environmental Requirements
21-50-77
Model # 21-50-77
Brand Cooper Antennas
Frequency

UHF Hi Angle

V/UHF Lo Angle

C/D Band

240 - 400 MHz

30 - 512 MHz

900 - 2000 MHz 

Gain

Hi Angle

Lo Angle

 

 

 

 

+6.5 dBiC

-20 dBi @ 30 MHz

-8.0 dBi @ 88 MHz

-5.0 dBi average @ 118 -174 MHz

+2.0 dBi average @ 225 - 512 MHz

+1.0 dBi average @ 900 - 2000 MHz 

VSWR

Hi Angle

Lo Angle

Link 16 &C/D Band

 ≤ 1.5:1

 ≤ 2.5:1

≤ 2.0:1  

Impedance (nominal) 50 Ohms for both ports 
Power

Hi Angle

Lo Angle

 

 

C/D Band:

200 Watts CW

50 Watts (30-88 MHz)

50 Watts (118-175 MHz)

200 Watts (225-512 MHz)

2 KW Peak

Polarization

Hi Angle

Lo Angle

C/D Band

Right Hand Circular

Vertical

Vertical

Antenna RF Connector

UHF Hi Angle

V/UHF Lo Angle

Link 16 &C/D Band

N Female

TNC Female

TNC Male 

Height 12 inches (305mm) max
Wingspan 13 inches (330mm) max 
Weight 9.5 lbs (4.32Kg) 
Fixing Holes 8 holes each 0.208 - 0.234 dia. Inches (5.28 - 5.94mm) 
ENVIRONMENTAL
Designed to Environmental

MIL-E-5400 Class 2

MIL-STD-810 

Finish

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

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