VHF Communications Antenna
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The 21-20-70 is a lightweight, single hole fixing VHF “whip” antenna suitable for helicopters or aircraft operation up to 350 knots.
The antenna radiating element is 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
- VHF/FM and maritime band operation
- Single hole fixing
- Suitable for up to 350 knots
- TNC female connector
|Gain (typical)||≥ +3.5 dBi at beam max|
≤ 1.5:1 across band
≤ 1.2:1 @ 169.5 MHz
|Impedance (nominal)||50 Ohms nominal|
|Power||50 Watts CW|
|Polarization||Linear (vertical when vertically mounted)|
|Radiation||Omni-directional in azimuth within 0.25 dB when vertically mounted|
|Antenna RF Connector||TNC Female|
- Matt Black
- Other finish options are available.
- Please specify finish required when ordering.