VHF Communications Antenna
The 21-20-54 is a very lightweight, simple to install VHF ‘whip’ antenna suitable for aircraft operating up to 350 knots. Full VHF ATC frequency coverage is achieved by matching circuits encapsulated in the antenna base. The antenna maintains a low VSWR when mounted either vertically or raked at an angle of 30º using the spacers provided.
Construction comprises a Beryllium Copper element encapsulated in a high strength tapered glass-epoxy tube which is bonded into an aluminum alloy base housing carrying a TNC (or BNC as 21-20-54-1) female connector.
- Covers full VHF ATC band
- Single hole fixing
- Can be installed vertical or raked 30º
- High strength glass-epoxy whip element
- Environmental conditions to MIL-STD-810
|Gain (typical)||≥ + 2 dBi|
|Impedance (nominal)||50 Ohms|
|Power||25 Watts CW|
|Pattern||Omnidirectional in azimuth Similar to stub in elevation|
|Radiation||Nominally omni directional in azimuth plane|
|Antenna RF Connector||TNC Female|
|Height||22 inches (560mm)|
- Gloss White
- Other finish options are available.
- Please specify finish required when ordering.