DatasheetMulti-function V/UHF LOS/UHF Satcom and GPS Antenna
30-512 MHz & 240-400 MHz 1564-1587/1216-1239 MHz
SKU: 21-50-78
The 21-50-78 is a rugged multifunction V/UHF LOS, UHF Satcom and GPS antenna designed for airborne applications. A high strength aerodynamic vertical shell houses a 30 to 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 and an L1/L2 passive GPS antenna. The antenna is completely sealed and filled with closed cell foam for long term protection against moisture ingress and reliability is further enhanced by a polyurethane rubber coating over all leading edges.
- Hi angle UHF Satcom & MUOS coverage
- Lo Angle V/UHF LOS communication
- Covers L1 and L2 GPS Frequencies
- EPLRS compatible
- Low wingspan minimizes loading on aircraft structure
- Fixing holes compatible with 437S1-H
- Designed to MIL-STD-810 Environmental Requirements
- Erosion protection over all leading edge surfaces
| 21-50-78 | |
| Model # | 21-50-78 |
| Brand | Cooper Antennas |
| Frequency |
UHF Hi Angle V/UHF Lo Angle GPS |
240 - 400 MHz 30 - 512 MHz 1564 - 1587 / 1216 - 1239 MHz |
| Gain |
Hi Angle Lo Angle
GPS |
+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 +3.0 dBiC @ Zenith |
| VSWR |
Hi Angle Lo Angle
GPS |
≤ 2.0:1 ≤ 2.5:1 30-451 MHz ≤ 3.0:1 451-512 MHz ≤ 2.0:1 |
| Impedance (nominal) | 50 Ohms for both ports | |
| Power |
Hi Angle Lo Angle
GPS |
200 Watts CW 50 Watts (30-88 MHz), 50 Watts (118-174 MHz) 200 Watts (225-512 MHz) 1 Watt |
| Polarization |
Hi Angle Lo Angle GPS |
Right Hand Circular Vertical Right Hand Circular |
| Antenna RF Connector |
UHF Hi Angle UHF Lo Angle GPS |
N Female TNC Female TNC Male |
| Height | 12.9 inches (328mm) max |
| Wingspan | 13 inches (330mm) max |
| Weight | 9.86 lbs (4.47Kg) |
| 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.
