Wide Band VHF/UHF Blade Antenna

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Wide Band VHF/UHF Blade Antenna

The 21-50-165 is a high performance wide band VHF/UHF airborne blade antenna suitable for aircraft operating in excess of Mach 2.

Construction is from a one piece fiberglass blade molding intimately bonded into an aluminum alloy base block which houses the matching circuits and provides for very solid attachment to airframe via 8 fixing holes.

Internal radiating elements are shaped in such a way as to optimize elevation patterns throughout the wide frequency band and proprietary matching techniques maintain a VSWR below 2.7:1.

The antenna assembly is completely sealed and filled with closed cell foam for reliable operation in world-wide conditions of service.

Suitable for aircraft operating at Mach 2+
High Strength Composite Blade with Integrated Aluminum Mounting plate
Low Side Area, Low Drag
Covers all VHF/UHF and P25 Frequency Bands
Single RF Connector can be externally diplexed
Environmental Performance to MIL-STD-810

	21-50-165
Model #	21-50-165
Brand	Cooper Antennas

Frequency	30 to 520 760 to 960 MHz
Gain	-40 dBi 30 MHz -18 dBi 88 MHz -10 dBi average 118-174 MHz 0 dBi average 225-520 & 760-960 MHz
VSWR	≤ 2.5:1 30 - 88 MHz & 108 - 118 MHz ≤ 2.0:1 118 - 174 MHz & 225 - 400 MHz
Impedance (nominal)	50 Ohms
Power	50 Watts CW
Polarization	Vertical (when mounted vertically)
Radiation	Omni directional in azimuth plane
Antenna RF Connector	N - Type Female

Antenna Shell Type	Epoxy/fiber glass blade in aluminum alloy base collar
Height	9.5 inches (241mm)
Weight	1.8 lbs (0.8kg)
Side Loading	≥ 8 psi ultimate
Base Plate Shape	Oval shape
Fixing Holes	8 x Ø 0.208 inch (5.28mm) holes, counter sunk 100°.