UHF Communications Antenna

Calculate Shipping

Freight quote - $0.00
As the size and weight is not normally known we use several freight carriers to ensure you get the best price. Complete your order or quote and we will get back to you with the available freight options.

The 21-30-71 is a lightweight, single hole fixing UHF “whip” antenna suitable for helicopters or aircraft operation up to 350 knots.

The antenna design features a radiating element encapsulated within a strong glass-epoxy tube which in turn is integrated into an aluminum alloy base containing a TNC connector and loss-less matching cavity.

Installation requires insertion into a 17.5mm (11/16in) hole in the airframe and securing with the washes and nuts provided.

Very light weight
Narrow Band UHF/FM operation
Single hole fixing
Suitable for up to 350 knots
TNC female connector

	21-30-71
Model #	21-30-71
Brand	Cooper Antennas

Frequency	443-450 MHz
Gain	≥ +3.5 dBi at beam max
VSWR	≤ 1.5:1 across band ≤ 1.2:1 @ 446.7 MHz
Impedance (nominal)	50 Ohms
Power	50 Watts CW
Polarization	Vertical (when vertically mounted)
Radiation	Omni-directional in azimuth within 0.25 dB when vertically mounted
Antenna RF Connector	TNC Female