DatasheetWide Band Receiving Antenna
20 to 512 MHz
SKU: 21-50-220
The 21-50-220 is a passive airborne blade antenna designed for receive only applications on helicopters and subsonic aircraft operating up to Mach 0.9. Electrical design is a “fan” radiating element with selective resistive loading to provide a VSWR match of better than 3:1. The blade is constructed from a high strength, glass loaded moulding containing the radiating elements, is fully sealed and filled with closed cell foam for long term reliability. The single RF connector is supported by an aluminum alloy base plate which should make good electrical contact to the conducting surface upon which the antenna is installed.
- Very wide continuous band width
- Strong, aerodynamic composite blade
- Internal matching and radiating elements require no tuning
- Suitable for use up to Mach 0.9
- Single ‘N’ type connector
- Designed to MIL-STD-810 environmental conditions
- Footprint interchangeable with AS-3191
| 21-50-220 | |
| Model # | 21-50-220 |
| Brand | Cooper Antennas |
| Frequency |
20 – 512 MHz |
|
| Gain |
≥-40 dBi @ 20 MHz ≥-10 dBi @ 88 MHz ≥-5 dBi @ 118 MHz ≥ 0 dBi @ 174 MHz ≥ 0 dBi @ average over 225 - 512 MHz |
|
| VSWR |
≤ 3.0:1 |
|
| Impedance (nominal) | 50 Ohms | |
| Polarization |
Essentially vertical when vertically mounted |
|
| Pattern |
Nominally omnidirectional in azimuth |
|
| Antenna RF Connector |
N type Female |
|
| Antenna Shell Type | High density foam filled glass loaded shell |
| Height | 14.7 inches max |
| Weight | 3.5 lbs max |
| Base Plate Shape | Tear drop |
| Fixing Holes | 6 x Ø 0.234 inches (5.9mm) holes, counter bored top side Ø 0.39 inches (9.9mm) |
Finish
- Antenna - Lusterless Black
- Baseplate - Unpainted
- Other finish options are available.
- Please specify finish required when ordering.
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