VHF Airborne Blade Antenna

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The 21-20-88 is a high performance VHF airborne blade antenna suitable for aircraft operating in excess of Mach 2.

Mechanical design of the blade comprises an internal printed circuit, foamed-in-place into a high strength epoxy-glass radome fitted to an aluminum alloy base block having an integral mounting flange and finished in epoxy lusterless black.

Structural design ensures high side loading acceptance as required on high speed military aircraft.

Covers 150 to 180 MHz
High Strength Composite Blade with Aluminum Alloy Base Block
Single ‘TNC’ Connector
Environmental Performance to MIL-STD-810
Fully sealed for environmental integrity

	21-20-88
Model #	21-20-88
Brand	Cooper Antennas

Frequency	150 MHz to 180 MHz
Gain (typical)	0 dBi at the maximum of pattern when mounted at center of an 8 foot (2.4m) minimum diameter ground plane.
VSWR	≤ 2.5:1
Impedance (nominal)	50 Ohms
Power	25 Watts CW
Polarization	Essentially Vertical (when mounted vertically)
Radiation	Nominally omni directional in azimuth plane
Antenna RF Connector	TNC Female

Construction	Glass loaded resin plastic blade
Height	6 inches (152mm)
Weight	2 lbs (0.9kg)
Side Loading	≥ 6 psi ultimate
Fixing Holes	4 x Ø 0.209 inches (5.3mm) holes, counter sunk 100° Ø 0.413 inches (10.5mm)