The 21-40-19 is an ultra wideband, airborne ground plane dependant antenna, 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 contoured monocone 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 a single stud for attachment to the airframe and the whole structure is filled with closed cell foam for long term reliability in world wide condition 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||900 - 3000 MHz|
|Gain||Typically + 3 dBi (average)|
|Impedance (nominal)||50 Ohms|
|Power||100 Watts (average)|
|Phase/Amplitude match||The antenna can be selected for phase and amplitude matching for use in DF system, either to a “Golden Standard” or in sets.|
|Radiation||Omni-directional in azimuth, approximately cosinusoidal in elevation|
|Antenna RF Connector||TNC Female|
|Height||2.56 inches (65 mm)|
|Base diameter||2.68 inches (68 mm)|
|Weight||0.22 lbs (100g) max|
|Attachment to Airframe||Single 5/8” UNEF Stud|
- Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.