The C2SAT Ku100MIL is a high performance stabilized VSAT antenna designed to meet US Military standards for vessels participating in sea warfare and defence. The antenna is easy to install, light and small - yet reliable and providing superior radio performance to support mission critical applications used on a modern battle ship.

  • Weight: ~ 230 Kg
  • Height: 1.35 m
  • Diameter: 1.45 m
  • Antenna completely assembled, balanced and tested at factory to support fast deployment


ASTG provides stabilized VSAT antennas built on a unique and proven 4-axes technology. The design enables shorter geometric path and less rotation torque for each axis, extending the life of the mechanical parts of the antenna as the system is subjected to less stress than a 3-axes system. The fourth axis also solves problems related to the zenith paradox occurring in a wide belt around the equator at high reflector elevations.


The antenna design is of Prime Focus type and the reflector is made of carbon fibre, standard for C2SAT antennas. The RF equipment is therefore light and easy to manoeuvre for the stabilizing platform, which facilitates fast and precise movements. The antenna complies with the requirements of Eutelsat and provides several technical advantages, such as;

  • High gain
  • Low side lobes
  • High cross-pol discrimination
  • Up to 50W with internal BUC
  • Up to 200 W with external BUC
  • EIRP (with 50W BUC) 59 dBW
  • Resistant to disturbance from other radio sources


The antenna system is fast due to the gimbal design with AC servo motors on each axis and the gradient satellite tracking method on all 4 axes. The antenna locks on the satellite within 8 seconds, starting from its parking position. Robustness is built into the system, partly because of the solid rig construction, but also because the 4-axis gimbal design facilitates less weight to move and a minimum of movement for each axis - all the time.


C2SAT antennas are generally designed for remote Operation and Maintenance. The functionality includes;

  • Real time supervision with access to performance statistics
  • Remote management using SNMP
  • Remote access control using SSH


C2SAT Ku100MIL is tested and approved based on military standard specifications concerning vibration, shock, and EMC according to MIL STD 810G and MIL STD 461F.

Stabilisation Type 4-axes gimbals. AC servo low inertia belt drive.
Antenna Type Prime Focus
Reflector Diameter 1 m (39")
Radome Size H: 1.35 m (53") D: 1.45 m (57")
Weight including Radome 230 kg (510 lbs)
Frequency Rx: 10.95 – 12.75 GHz / Tx: 13.75 – 14.5 GHz
Antenna Gain Rx: 40.0 dBi / Tx: 42.0 dBi
Reflector Material Carbon Fibre
Side lobe Envelope 33–25 log (Θ)
Cross Polarization Tx: > 35 dB within 1dB cone
Signal Polarization Linear Cross-pol
G/T (@ 20° elevation, typical) 18.5 dB/K @ 12.2 GHz
Maximum BUC Power 50W internal BUC or 100 - 200W external BUC
Antenna Movement, azimuth Continuous, unlimited (slip ring)
Antenna Movement, Elevation 0 – 120°
Antenna Movement, Cross Level ± 30°
Antenna Movement, Polarisation ± 120°
Ship Motion ± 30° per 4s in pitch, roll and yaw
Heave +/- 5m @3s
Pointing accuracy 0.1° RMS
GPS Antenna Built in
Radar Rejection >80 dB @ 9.6 GHz
Radome Material Polyester laminate with Trident foam core
Compass Interface NMEA 0183
Nominal Voltage: 115VAC @ 60 Hz or 220 – 230VAC @ 50/60 Hz
Operating Temperature -20 – 55 °C
Humidity 97% @ 30 °C
Vibration Operating MIL-STD-810G, Metod 528, Table 528.III
Shock Operating 20 g, half-sine 11 ms, MIL-STD-810G, Method 516.6
Shock Non-Operating Transverse / Longitudinal: 20 g 20 ms; 40 g 6 ms
Vertical: 15 g 20 ms; 30 g 6 ms
EMC MIL STD 461F, RS103 200V/m (2 MHz – 40 GHz)