H-124 Fixed Satcom Antenna
The H-124 Fixed SATCOM Antenna is a high-gain UHF helical antenna operating across the 240–320 MHz frequency range. It is designed to support legacy UHF Follow-On (UFO) satellite communications for mission-critical military and defense applications.
Description
The H-124 Fixed SATCOM Antenna is engineered for military and defense satellite communications requiring reliable performance in demanding environments. Operating within the 240–320 MHz UHF frequency band, it provides full coverage of the uplink and downlink frequencies used by legacy UHF Follow-On (UFO) SATCOM systems.
Delivering 15 dBi gain at 320 MHz with right-hand circular polarization (RHCP), the H-124 offers superior signal quality and focused directional radiation to support secure and effective ground-to-satellite communications. Its optimized RF performance helps maintain stable links for mission-critical defense applications.
Built to withstand extreme environmental conditions, the H-124 features robust construction and high power handling for dependable long-term operation. Versatile mounting options further enhance deployment flexibility, making the H-124 a proven and essential solution for fixed installations supporting legacy UHF SATCOM networks.
| General Specifications | |
|---|---|
| Model Name | H-124 |
| Part Number | 18755811 |
| Antenna Type | Helical Antenna |
| Radiation Pattern | Directional |
| Colour | Battleship Grey, Semi Gloss finish (RAL 7046) |
| Compliances | RoHS, REACH |
| Markets | Military & Defence, Satellite Communications |
| Electrical Specifications | |
| Frequency (MHz) | 240-320 |
| Frequency Band | UHF |
| Gain - (dBic) | 15 @ 320 MHz |
| Polarization | RHCP |
| VSWR (Max) | 1.5:1 |
| Impedance (Ω) | 50 |
| Max Input Power (W) | 500 |
| Axial Ratio (dB) | 0.8 |
| Front/Back Ratio - Min. (dB) | 29 |
| HPBW (°) | 41 @ 280 MHz |
| Mechanical Specifications | |
| Length - in (mm) | 155 (3937) |
| Weight - lbs (kg) | 49 (22.2) |
| Ground Plane Diameter - in (mm) | 35 (889) |
| Connector Type | N-Type (Female) |
| Number of Connectors | 1 |
| Environmental & Structural Specifications | |
| Operating Temperature - °F (°C) | -40 to 158 (-40 to 70) |
| Wind Loading Area - ft² (m²) | 3.8 (.35) |
| Wind Loading Area with ½" Ice - ft² (m²) | 8.5 (.78) |
| Wind Load ft-lbs | 755 |
| Wind Load ft-lbs with ½" Ice | 491 |
| Survival Rating No Ice - mph (kph) | 150 (241) |
| Mounting Specifications | |
| Mount Type | HM-5 Mount, Dual Pedestal Mount, AM-1 Mount |
