Wideband Receiving Antenna
20 to 3000 MHz
The 21-50-400 is an ultra wideband, monopole antenna suitable for airborne and vehicular use, designed for use in SIGINT type applications where a number of them can be used to provide a DF array. The antenna structure comprises a unique element design with careful element shaping to optimize radiation diagram and avoid deep nulls in the elevation pattern throughout the band.
Construction is from high strength fibre glass with aluminium alloy base plate and the whole structure is filled with closed cell foam for long term reliability in world wide conditions of service.
- Ultra wide-bandwidth
- Low profile
- Can be used in arrays
- Fully sealed construction for environmental reliability
- Designed to MIL-STD-810 Environmental conditions
|Frequency||20 - 3000 MHz|
-40dBi @ 20MHz
-30dBi @ 30MHz
-20dBi @ 100MHz
-12dBi @ 200MHz
-5dBi @ 500MHz
|Impedance (nominal)||50 Ohms|
|Power||5 Watts max|
|Phase/Amplitude match||Can be selected for phase and amplitude matching for DF systems, either to a “Golden Standard” or in sets.|
|Radiation Pattern||Omni-directional in azimuth, approximately co-sinusoidal in elevation (see graphs)|
|Antenna RF Connector||TNC Female|
|Overall Height||15 inches (381mm) max|
|Element Diameter||3.54 inches (90mm)|
|Base Diameter||5.55 inches (141mm)|
|Weight||3lbs (1.36Kg) max|
|Fixing Holes||4 x Ø 0.433 inches (11mm) on Ø 4.5 (114mm) PCD|
- Antenna - Urethane lusterless Gray
- Other finish options are available.
- Please specify finish required when ordering.