SATCOM On-The-Move Model 20-20M Terminal
General Dynamics Mission Systems SATCOM-on-the-Move (SOTM) products share a legacy of proven, reliable performance on aircraft, ships, fast boats and a variety of military wheeled and tracked vehicles. The M20-20M was specifically designed for ground vehicle command, control & communications (C3) missions where beyond line of sight (BLOS) SATCOM capabilities are mission critical.
- Reliable high data rate satellite communications while on-the-move
- Interchangeable X, KU and KA band payloads
- Modem Agnostic
- Lightweight and rugged to withstand the harshest environments
Military Satellite Communications On-The-Move
Our SATCOM On-the-Move® antennas provide reliable, high data rate satellite communications while on the move enabling secure, beyond-line-of-sight communications for vehicles in motion over rugged terrain.
Features
SOTM terminals are available in a variety of sizes and configurations and have a long history of proven, reliable performance on aircraft, ships, fast boats and a variety of wheeled and tracked vehicles including HMMWV, Bradley and Stryker. The Model 20-20M series terminals share a common technology base, components and user interface with other products in the SOTM family (Models 17, 24 and 30).
- Reliable high data rate satellite communications
- Superior link availability and performance over a wide range of operational conditions
- RF bands provide maximum operational flexibility, including Ku, Ka MIL, Ka Commercial and X Band.
- Leverages a wide range of commercially available modem systems
- Modular design enhances maintainability and minimizes life cycle cost
- Lightweight, low profile design with all RF Components on Elevation Payload for high efficiency RF Tx/Rx
- Antenna includes the antenna positioner, servo controller, tracking receiver, block up and down-converters and high efficiency solid state power amplifier all contained on the pedestal with interface for Power, Ethernet and L-Band Tx/Rx interface to modem
Specifications
| Ku | Ka (MIL) | Ka (COM) | X | |
|---|---|---|---|---|
| Frequency - Receive | 10.95 to 12.75GHz | 20.20 to 21.20 GHz | 19.20 to 20.20 GHz | 7.25 to 7.75 GHz |
| Frequency - Transmit |
13.75 to 14.50 GHz |
30.00 to 31.00 GHz |
29.00 to 30.00 GHz |
7.90 to 8.40 GHz |
| Model Number |
M20-20M Ku |
M20-20M Ka MIL |
M20-20M Ka COM |
M20-20M X |
| Aperture Size |
20.5 inches |
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| Pedestal |
2 Axis Az/El |
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| SSPB P1dB |
25 Watts |
13 Watts | 13 Watts | 25 Watts |
| G/T Typ at Midband (30° El, 25°C) |
12.6 dB/K |
15.9 dB/K |
15.4 dB/K |
8.3 dB/K |
| EIRP Typ at Midband and P1dB |
48.0 dBW |
52.7 dBW |
52.5 dBW |
43.1 dBW |
| Beamwidth, 3 dB, Rx/Tx Midband |
3.2°/2.7° |
1.9°/1.3° |
2.0°/1.4° |
5.3°/4.9° |
| Sidelobes, Tx |
FCC VMES Compliant |
MIL-STD-188-164A |
MIL-STD-188-164A |
MIL-STD-188-164A |
| Polarization |
Active Pol Alignment |
Circular, RH/LH or LH/RH, or RH/RH, or LH/LH Remotely Selectable |
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| Transmit Cross Polarization at 1 dB Down |
30 dB Typ, 26 dB Min |
N/A |
N/A |
N/A |
| Axial Ratio inside 1 dB BW, Rx/Tx |
N/A | 1.5/1.0 |
1.5/1.0 |
<1.2 dB |
| Environmental/EMI |
MIL-STD 810G / MIL-STD-461G (Land-Army |
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| Azimuth Travel |
360° deg continuous |
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| Elevation Travel (Full Performance) |
0° (horizon) to +80° |
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| Elevation Travel (Total) |
0° (horizon) to +95° |
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| Polarization Travel |
360° Continuous |
N/A |
N/A |
N/A |
| Tracking Performance |
FCC VMES Compliant |
< 0.20° – 99% of the time during Churchville B conditions |
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| Satellite Acquisition Time |
< 5 sec hot, < 5 min from cold start |
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| Height |
24.5 inches |
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| Diameter Radome |
23.7 inches |
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| Diameter (Footprint at Base) |
27.5 inches |
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| Weight |
125 lbs. |
145 lbs. |
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| Operating Temperature |
-40°C to +49°C |
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| L Band IF Tx/Rx Range |
950 to 1750 MHz |
1000 to 2000 MHz |
1000 to 2000 MHz |
950 to 1450 MHz |
| Supply Voltage |
28 VDC per MIL-STD-1275E* |
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| Power |
350 Watts Continuous, 800 Watts Peak (theoretical) |
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