DatasheetSpecial-to-Type VHF/UHF LOS & UHF Satcom Antenna
30-88 MHz 108-174 MHz and 225-512 MHz Satcom 240-400 MHz
SKU: 21-66-16
The 21-66-16 is a Special-to-Type multifunction antenna designed to fit conformally into a supersonic military aircraft. The concept is to provide a dielectric “window” (P/N 21-60-16) in the upper surface of the aircraft, through which a combined Line-of-Sight “LOS” and UHF Satcom antenna radiate, using the aircraft structure as a ground plane and reflective surface.
This antenna provides LOS frequency coverage from 30 to 512MHz in a vertical element with specially shaped, top-mounted crossed dipoles providing UHF Satcom coverage. These dipoles are decoupled at UHF but provide RF toploading at VHF to give enhanced gain in the SINCGARS 30-88MHz band.
The vertical LOS element can also be used to provide a linear polarized low-angle Satcom for Satellite capture down to horizon.
Mechanical design is such as to provide minimal airframe modifications, thus making the 21-66-16 suitable for retrofit applications.
| 21-66-16 | |
| Model # | 21-66-16 |
| Brand | Cooper Antennas |
| Frequency |
LOS
Satcom |
30 - 88 MHz 108 - 174 MHz 225 - 512 MHz 240 - 400MHz |
|
| Gain (typical) |
LOS
Satcom
|
30 MHz 88 MHz 108 - 174MHz 225 - 512MHz
240-320MHz 320-400MHz |
-22 dBi -8 dBi -5 dBi (average) 0 dBi (average)
+6dBiC +4dBiC |
| VSWR |
≤ 2.5:1 (30 - 512MHz) ≤ 2.0:1 (240 - 400MHz) |
||
| Impedance (nominal) | 50 Ohms | ||
| Power |
50 Watts (LOS) 200 Watts (Satcom) |
||
| Polarization |
LOS: Vertical Satcom: RH Circular |
||
| RF Power | 20 Watts CW | ||
| Switching Time | 6 ms (from control signal) | ||
| Connector |
LOS: TNC Female Satcom: N Female |
||
| Overall Height of Antenna | 11.2 inches (284.5mm) |
| Weight |
4.4 lbs (2kg) max |
Finish
- Antenna - Primer protection coat
