Combined Passive/Digitally Tuned VHF/UHF Antenna

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This antenna provides exceptional gain via a digitally tuned element in the 30-88 MHz band combined with a wide band passive VHF/UHF element, co-located within a single, high strength fiber glass radome.

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 and EMI design considerations combined with latest composites structural technology makes the 21-150-15 suitable for helicopters and subsonic aircraft. 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 provided for most current generation digital transceivers which should be specified when ordering.

Frequency Hopping - fast tune
Only 13" height
Tuned Antenna = Increased SINCGARS Radiation Efficiency
Tuning Controlled by Separate Logic Control Unit (LCU)
LCU’s compatible with latest generation multi-mode radios
Designed to MIL-STD-810 Environmental conditions
Suitable for helicopter and subsonic aircraft
Footprint drilling compatible with 437S-1H relay tuned antenna

	21-150-15
Model #	21-150-15
Brand	Cooper Antennas

Frequency	30-88 MHz 108-174 MHz 225-512 MHz
Gain (typical)	≥ - 9 dBi (30 MHz) ≥ 0 dBi (88 MHz) ≥ - 1 dBi average (118 - 174 MHz) +1 dBi average (225 - 512 MHz)
VSWR	2.5:1
Impedance (nominal)	50 Ohms
Power	30 Watts (35 Watts with duty cycle)
Tuning Time	Less than 60µ seconds
Polarization	Vertical (when vertically mounted)
Antenna RF Connector	N Type Female
DC Connector	PTO2 12-10P

Height	13 inches max (330 mm max)
Weight	Antenna 6.5 lbs (2.9kg)
Fixing Holes	Suitable for 8 x 10:32 UNF or similar
ENVIRONMENTAL
Temperature	-54ºC to +80ºC
Operating Speed	Up to Mach 0.95