Ultra Lo-Profile Fast Tune VHF/UHF Antenna

30 - 512 MHz

SKU: 21-150-02

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Ultra Lo-Profile Fast Tune VHF/UHF Antenna

This tunable antenna provides exceptional gain in the 30-88 MHz SINCGARS band compared to similarly sized passive antennas whilst maintaining optimum performance right up to 512 MHz. Many years of experience in designing solid-state tuned antennas has enabled CAL’s team to provide the ultimate in performance and reliability for a frequency agile airborne blade. Close attention to environmental, EMI and harmonic generation design considerations combined with latest composites structural technology makes the 21-150-02 suitable for helicopters and subsonic aircraft, particularly when there is low ground clearance. The separate logic converter unit combines flash memory technology with MIL spec’d power supply in a MIL-STD-461 compliant package. LCU’s can be programmed for all modern digital transceivers. A unique feature of this antenna design is that the main radiating element is passive, symmetrical and matched for the UHF band and the p-i-n diode tuning circuitry only operates in VHF and is enclosed within the radiating element. In this way, excellent azimuthal omni-directivity is maintained throughout the entire frequency band. Excellent VHF low band gain is additionally achieved by the thin section top loading plate. 

  • Frequency Hopping - fast tune using p-i-n diodes
  • Only 5.25” high
  • Tuning Controlled by Separate Logic Control Unit (LCU)
  • Designed to MIL-STD-810 Environmental conditions
  • Suitable for helicopter and subsonic aircraft
  • Footprint compatible with AS-3191
  • Exceptionally low harmonic generation levels
21-150-02
Model # 21-150-02
Brand Cooper Antennas
Frequency

30-88 MHz

108-174 MHz

225-512 MHz 

Gain (typical) 

≥- 15 dBi (30 MHz)

≥ -7.5 dBi (88 MHz)

≥ -3 dBi average (118-174 MHz)

≥ +1 dBi average (225-512 MHz)

VSWR 2.5:1 
Impedance (nominal) 50 Ohms
Power 25 Watts
Tuning Time  Less than 60µ seconds
Polarization Vertical (when vertically mounted) 
Antenna RF Connector  TNC Female 
DC Connector Multi pin D38999 Series lll 
LCU part number 21-151-05 (ARC210 or ARC231)
Height 5.25 inches (133mm)
Weight

Antenna 3.5 lbs (1.59kgs)

Logic Unit 1.65 lbs (0.75kg)

Fixing Holes  6 x Ø 0.208 inch holes for 10:32 UNF holes or similar

Finish

  • Urethane Gloss White 
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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