DatasheetMulti-function UHF/VHF, Link 16 and Satcom Antenna
240 to 400 MHz, 30 to 512 MHz, 900 to 2000 MHz
SKU: 21-50-77
The 21-50-77 is a rugged multifunction VHF/UHF, LOS, C/D Band Data Link and UHF Satcom antenna designed for airborne applications. A high strength aerodynamic vertical shell houses a 30 - 512 MHz linear element that can be used for V/UHF line of sight “LOS” communications or UHF Satcom at low angles of elevation. This vertical shell also supports a “Bat-Wing” shape horizontal element containing a pair of cross dipoles, connected to provide high angle, right hand circularly polarized UHF Satcom coverage.
A small wideband discone on the upper batwing surface provides 900-2000 MHz coverage for LINK16, MIDS, JTIDS and other C/D band systems.
- Hi and Lo angle UHF Satcom coverage
- Full 30 - 512 MHz LOS communications
- Wide Band Link16/JTIDS/MIDS
- PRC-117G, AN/ARC-210 & AN/ARC-231 compatible
- Low wingspan minimizes loading on aircraft structure
- Fixing holes compatible with 437S1-H
- Designed to MIL-STD-810 Environmental Requirements
| 21-50-77 | |
| Model # | 21-50-77 |
| Brand | Cooper Antennas |
| Frequency |
UHF Hi Angle V/UHF Lo Angle C/D Band |
240 - 400 MHz 30 - 512 MHz 900 - 2000 MHz |
| Gain |
Hi Angle Lo Angle
|
+6.5 dBiC -20 dBi @ 30 MHz -8.0 dBi @ 88 MHz -5.0 dBi average @ 118 -174 MHz +2.0 dBi average @ 225 - 512 MHz +1.0 dBi average @ 900 - 2000 MHz |
| VSWR |
Hi Angle Lo Angle Link 16 &C/D Band |
≤ 1.5:1 ≤ 2.5:1 ≤ 2.0:1 |
| Impedance (nominal) | 50 Ohms for both ports | |
| Power |
Hi Angle Lo Angle
C/D Band: |
200 Watts CW 50 Watts (30-88 MHz) 50 Watts (118-175 MHz) 200 Watts (225-512 MHz) 2 KW Peak |
| Polarization |
Hi Angle Lo Angle C/D Band |
Right Hand Circular Vertical Vertical |
| Antenna RF Connector |
UHF Hi Angle V/UHF Lo Angle Link 16 &C/D Band |
N Female TNC Female TNC Male |
| Height | 12 inches (305mm) max |
| Wingspan | 13 inches (330mm) max |
| Weight | 9.5 lbs (4.32Kg) |
| Fixing Holes | 8 holes each 0.208 - 0.234 dia. Inches (5.28 - 5.94mm) |
| ENVIRONMENTAL | |
| Designed to Environmental |
MIL-E-5400 Class 2 MIL-STD-810 |
Finish
- Antenna - Urethane Lusterless Grey
- Baseplate - Unpainted, Alocrom
- Other finish options are available.
- Please specify finish required when ordering.
