View PDF brochure for Combined Passive/Digitally Tuned VHF/UHF & L-Band AntennaDatasheet

Combined Passive/Digitally Tuned VHF/UHF & L-Band Antenna

30 - 512 MHz & 960 - 1220 MHz

SKU: 21-290-01

Contact us for latest price
Sold Out - Backorder Available

Calculate Shipping

Freight quote - $0.00
As the size and weight is not normally known we use several freight carriers to ensure you get the best price. Complete your order or quote and we will get back to you with the available freight options.

Combined Passive/Digitally Tuned VHF/UHF & L-Band Antenna

 This antenna provides exceptional gain via a digitally tuned element in the 30-88 MHz band combined with wide band passive VHF/UHF & L-band elements. The elements are co-located within a single, high strength fiber glass radome. Unique radiating element design provides simultaneous operation of VHF/UHF & L- band through separate coaxial connectors. Many years of experience in designing solid-state tuned antennas has enabled CAL’s team to provide the ultimate in performance and reliability in this frequency agile airborne blade. Close attention to environmental and EMI design considerations, and the latest composites structural technology makes the 21-290-01 suitable for helicopters and subsonic aircraft and is compliant with MIL-STD-810. The separate logic converter unit combines flash memory technology with a MIL spec power supply in a MIL-STD-461 compliant package. LCU’s can be provided for most current generation digital transceivers. Transceiver should be specified when ordering.

  • Frequency Hopping - fast tune Capability and increased radiation efficiency
  • Tuning Controlled by Separate Logic Control Unit (LCU) compatible with latest generation multi-mode radios
  • Designed to MIL-STD-810 Environmental conditions
  • Suitable for helicopter and subsonic fixed wing aircraft
Model # 21-290-01
Brand Cooper Antennas

30-88 MHz

108-174 MHz

225-512 MHz

960 - 1220 MHz 

Gain (typical) 

≥ - 10 dBi (30 MHz)

≥ - 2 dBi (88 MHz)

≥ 0 dBi (118 MHz)

≥ 0 dBi (174 MHz)

≥ +2 dBi average (225-512 MHz)

≥ +1 dBi average (960-1220 MHz) 


≤ 2.5:1 (V/UHF)

≤ 2.0:1 (L-Band) 

Impedance (nominal) 50 Ohms

50 Watts VHF (30 - 174 MHz)

100 Watts UHF (225-512 MHz)

3 kW peak 0.004 duty cycle L-Band 

Tuning Time Less than 60 μ seconds 
Polarization (nominal) Vertical (when vertically mounted) 
Antenna RF Connector Omni directional in azimuth plane
Antenna RF Connector 


N Type Female L-Band

DC connector  Multi pin D38999 
Height 12.3 inches max
Weight Antenna 5.5 lbs 
Mounting Holes 10 x 10:32 UNF or similar 
ENVIRONMENTAL 2.25 inch max (57mm) 
Temperature -54ºC to +80ºC 
Operating Speed Up to Mach 0.95 


  • Antenna - Urethane Gloss White 
  • Base Plate - Unpainted
  • Other finish options are available.
  • Please specify finish required when ordering.

More From This Category

Airborn Stub Antenna

Airborn Stub Antenna

SKU: 21-50-30

Airborne AIS Blade Antenna

Airborne AIS Blade Antenna

SKU: 21-20-60

Airborne Blade Antenna

Airborne Blade Antenna

SKU: 21-30-55

Airborne Blade Antenna

Airborne Blade Antenna

SKU: 21-30-176

Airborne IFF Interrogator Antenna

Airborne IFF Interrogator Antenna

SKU: 21-40-66

Airborne Stub Antenna

Airborne Stub Antenna

SKU: 21-20-12

Aircraft Static Discharger

Aircraft Static Discharger

SKU: 21-90-02