UHF Airborne Antenna

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The 21-30-69 is an externally mounted airborne stub antenna operating over the UHF frequency band of 420-470 MHZ.

A fiberglass rod with an internal element is fitted into an aluminum base which contains foamed-in place matching circuits capable of handling up to 50 Watts power.

The method of construction provides protection from severe environmental conditions including high vibration, shock and temperature variations.

Covers 420-470 MHz Frequency Band
Suitable up to 350 Knots
Fully Environmentally Sealed
Meets AS-3191 Lightning Strike Criteria
Less than 8 inches height
TNC Connector

	21-30-69
Model #	21-30-69
Brand	Cooper Antennas

Frequency	420 to 470 MHz
Gain	≥ + 2.5 dBi average
VSWR	≤ 2.0:1
Impedance (nominal)	50 Ohms
Power	50 Watts
Polarization	Linear (vertical when vertically mounted)
Radiation	Nominally omni directional in azimuth plane
Antenna RF Connector	SMA Female

Construction	Fibreglass whip/ Aluminum base
Height	7.9 inches (200 mm)
Weight	0.35 lb (0.16kg)
Base Plate Shape	Tear drop
Fixing Holes	4 x Ø 0.170 inches (4.3mm) ±0.005 inches (0.127mm) holes, counter sunk at 100° Ø 0.280 inches (7.1mm).