H-104 Fixed Satcom Antenna
The H-104 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-104 Fixed SATCOM Antenna is engineered for mission-critical 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.
Featuring a 10-element helical design, the H-104 delivers increased gain and enhanced signal strength to support secure, uninterrupted ground-to-satellite communications for both tactical and strategic operations. Its directional radiation pattern and optimized RF performance help maintain stable connectivity over extended ranges.
Built to military standards, the H-104 is designed to withstand extreme environmental conditions, making it well suited for fixed installations in remote or contested locations. Its rugged construction and proven performance make it a dependable solution for defense forces operating legacy UHF SATCOM networks.
| General Specifications | |
|---|---|
| Model Name | H-104 |
| Part Number | 18755809 |
| 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) | 13.4 @ 320 MHz |
| Polarization | RHCP |
| VSWR (Max) | 1.5:1 |
| Impedance (Ω) | 50 |
| Max Input Power (W) | 500 |
| Axial Ratio (dB) | 1 |
| Front/Back Ratio - Min. (dB) | 30 |
| HPBW (°) | 41 @ 280 MHz |
| Mechanical Specifications | |
| Length - in (mm) | 134 (3404) |
| Weight - lbs (kg) | 44 (20.0) |
| 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) | 3.1 (.28) |
| Wind Loading Area with ½" Ice - ft² (m²) | 7.1 (.65) |
| Wind Load ft-lbs | 530 |
| Wind Load ft-lbs with ½" Ice | 344 |
| Survival Rating No Ice - mph (kph) | 150 (241) |
| Mounting Specifications | |
| Mount Type | HM-5 Mount, Dual Pedestal Mount, AM-1 Mount |
