Multi-Band VHF/UHF/L-Band Communications Antenna

30 to 174 MHz, 225 to 512 MHz 30 to 174 MHz, 225 to 512

SKU: 21-50-88

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Multi-Band VHF/UHF/L-Band Communications Antenna

The 21-50-88 is a rugged multifunction VHF/UHF/L-Band antenna designed for airborne applications. A high strength vertical shell houses 30-174, 225-512 and 960-1220 MHz linear elements to be used with separate VHF/UHF line of sight “LOS” communications and LINK16 datalink or IFF radios. Proprietary matching techniques are used to give excellent gain in the VHF low band without need for external tuning. This antenna includes a lightning protection scheme whereby internal metal elements are high voltage insulated such that diverters on the outer radome surface attached to the isolated aluminum top plate cause local ionisation and lead the strike to airframe.

Footprint is compatible with Collins 437S-1H and Chelton 12-437 series antennas.

  • Fully environmentally sealed
  • Internal VHF/UHF to L-Band filters
  • 30-512 MHz communication & 960-1220 MHz for JTIDS/LINK16
  • Excellent gain throughout without need for external tuning
  • Allows continuous and simultaneous monitoring of 40.5, 121.5, 156.8, 243 and 406 MHz guard frequencies
  • AN/ARC-210, AN/ARC-231, ARC164 & SINCGARS compatible.
  • Designed to MIL-STD-810 Environmental Conditions
  • Lightning Protected 
21-50-88
Model # 21-50-88
Brand Cooper Antennas
Frequency

30-174 MHz

225-512 MHz

960-1220 MHz

Gain

≥ -15.5 dBi @ 30 MHz

≥ -7 dBi @ 88 MHz

≥ -1 dBi (average) over 118 -174 MHz

≥ +1 dB (average) over 225 - 512 MHz

≥ +1 dB (average) 960 - 1220 MHz 

VSWR

VHF/UHF

L-Band 

 ≤ 2.5:1 

≤ 2.0:1

Impedance (nominal) 50 Ohms
Power

50 Watts (30 – 88 MHz)

50 Watts (118 - 174 MHz )

100 Watts (225 - 512 MHz)

200 Watts ave, 2 KW Peak (L-Band) 

Polarization

Vertical

Antenna RF Connector

VHF/UHF 

L-Band 

TNC Female

N Type  

Height 15 inches max (381 mm) 
Weight 6.5 lbs (2.95 kg) 
Fixing Holes 8 x Ø 0.208 inches holes, counter bore Ø 0.39 inch

Finish

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

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