VHF/UHF High Power Airborne Blade Antenna

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VHF/UHF High Power Airborne Blade Antenna

The 21-50-21 is an airborne blade capable of accepting high power inputs over the continuous frequency range of 100-500 MHz.

Designed as a modified discone with loss-less matching, the antenna comprises a three dimensional radiating element contained within a one-piece molded radome of glass-epoxy. Attachment to airframe is via a substantial aluminum baseplate with 8 mounting holes making the antenna suitable for transporttype aircraft operating up to Mach 0.85.

Continuous Frequency Coverage
300 Watts CW power handling, 500 Watts with duty cycle
Passive design - does not require tuning
DC Grounded Element
Rugged aerofoil radome
Suitable for use up to Mach 0.85 subject to side loading
Designed to MIL-STD-810 Environmental Conditions

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

Frequency	100 - 500 MHz continuous
Gain	≥ 1 dBi @ 100 MHz ≥ 2 dBi @ 200 MHz ≥ 3 dBi 300 to 500 MHz
VSWR	3:1 max 100 - 200 MHz } see graph 2.5:1 max 201- 500 MHz }
Impedance (nominal)	50 Ohms
Power	300 Watts CW, 500 Watts with 10% Duty Cycle
Polarization	Vertical when vertically mounted
Radiation Pattern	Nominally Omnidirectional (with ± 1.5 dB) azimuth
Antenna RF Connector	N Female