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Light Aircraft Terminal VMT-1820LA
Two-Way Broadband Ku Satcom-on-the-Move
Small Footprint Terminal
with 18 in. Antenna
for High Data Rate
Airborne Communications
The ViaSat Mobile Terminal 1820 for light aircraft (VMT-1820LA)
is a complete airborne satellite terminal with an 18 in. antenna and
lightweight equipment delivering broadband IP communicationson-the-move. With this mobile terminal and ViaSat’s worldwide
network and broadband service, aircraft operators can send live,
full-motion high-definition video over the horizon, make secure
phone calls, conduct video conferences, access classified and
public networks, and perform mission-critical communications
while in flight.
LIGHT AIRCRAFT MOBILE SATCOM
AT-A-GLANCE
Equipped with integrated technologies and robust waveforms,
this terminal delivers streaming data rates up to 10 Mbps with a
bandwidth-efficient 18 in. antenna. This terminal leverages in-vehicle
equipment that has logged hundreds of thousands of flight hours on
deployed government aircraft.
FCC/ITU-Compliant
»»Authorized in over 100 countries
»»Mitigates adjacent satellite interference with
spread spectrum waveforms
»»Optimized capacity with closed loop power
control and advanced network management
»»DO-160 qualified antenna, antenna control unit,
and modem
True broadband communications-on-the-move is a reality, and
made affordable with ViaSat’s VMT-1820LA terminal and worldwide
satellite network.
MOBILE BROADBAND COMMUNICATIONS
FOR LIGHT AIRCRAFT
»»Live HD ISR Video from the Aircraft
»»Office-in-the-Sky Connectivity for VIP Transport
»»Enroute Video/Voice Conferencing
Secure High-Speed Communications
»»Protected IP traffic with optional HAIPE®
Type 1 encryption
»»Up to 10 Mbps streaming return link
»»10 to 30 Mbps shared forward link
Flexible Design for Aircraft Requirements
»»18 in. antenna mounts on fuselage of aircraft
(12 in. antenna also available)
»»Modem can be located any distance from
antenna
»»Multiple radome options
»»Accurate satellite tracking in all mission phases
with GPS-aided Inertial Reference Unit (IRU)
»»28 VDC or 120 VAC powered modem options
Global Network & Services
»»Worldwide broadband satcom
»»Optimized for mobile applications
»»High-capacity regional and enroute coverage
»»Annual service plans for predictable
budget planning
»»Technical support with tiered service levels
»»Customizable service plans to meet your
mission requirements
Light Aircraft Terminal VMT-1820LA
SPECIFICATIONS
OPERATING FREQUENCY
OPTIONAL FEATURES
Transmit14.0 to 14.5 GHz
Receive10.95 to 12.75 GHz
Encryption
» Type 1 HAIPE (KG-250X)
» AES-256 FIPS 140-2
MODULATION AND FEC
Acceleration
TCP/IP performance
enhancing proxy
Integrated Router/Multiple options
Video Compression
Forward/Return Link
Network Optimized—Variable
Coding, Spreading, and
Modulation (VCSM)
ENVIRONMENTAL AND
PHYSICAL CHARACTERISTICS
Spread Forward/Variable to 150
Return Link
VR-18 Antenna
»»PowerSupplied via ACU
»»Operating Temperature-55° to 70° C
»»Storage Temperature-55° to 85° C
»»Weight26.5 lb; 12 kg
FECR = 1/3 Turbo or DVB-S2
Frequency Reuse
Paired Carrier Multiple Access
(PCMA)
TRANSMISSION RATES
Forward LinkUp to 30 Mbps
Return Link128 kbps to 10 Mbps
RF/TRACKING PERFORMANCE
EIRP
46 dBW minimum
G/T
12 dB/K minimum for >11.55 GHz;
11 dB/K minimum for <11.55 GHz
Polarization
Linear horizontal or vertical
with tracking
Coverage
»»Azimuth +/− 360º (continuous)
»»Elevation 5º to 85º
»»Polarization+/− 135°
Tracking Rates
»»Azimuth30°/s
»»Elevation20°/s
»»Polarization20°/s
Tracking Acceleration
»»Azimuth30°/s²
»»Elevation30°/s²
»»Polarization30°/s²
ViaSat Mobile Broadband Router—VMBR-1500
(Other variants available)
»»Power<100 W @ 28 VDC
»»Operating Temperature-20° to 60° C
»»Storage Temperature-40° to 85° C
»»Dimensions14.6 x 4.88 x 7.63 in.
»»Weight10 lb; 4.5 kg
Antenna Control Unit
»»Power<350 W @ 28 VDC
»»Operating Temperature
-55° to 70° C
»»Storage Temperature-55° to 85° C
»»Dimensions8 x 11 x 3.4 in.
»»Weight6.5 lb; 2.9 kg
Inertial Reference Unit
»»Power<18 W @ 28 VDC
»»Operating Temperature-46° to 60° C
»»Storage Temperature-46° to 71° C
»»Dimensions7.45 x 7.5 x 4.78 in.
»»Weight8.5 lb; 3.9 kg
BASEBAND INTERFACES
Data10/100BASE-T Ethernet
Console
RS-232 and Ethernet (via SSH)
CONTACT
SALES
TEL 888 842 7281 (US Toll Free)
EMAIL insidesales@viasat.com
WEB www.viasat.com
UNITED STATES Carlsbad, CA and Washington, DC TEL +1 760 476 4755
UNITED KINGDOM Wareham, UK
AUSTRALIA Canberra
TEL +44 0 1929 55 44 00
TEL +61 0 2 61639200
FAX +1 760 683 6815
FAX +44 0 1929 55 25 25
FAX +61 0 2 61622950
EMAIL insidesales@viasat.com
EMAIL sales@viasat.uk.com
EMAIL gov.australia@viasat.com
Copyright © 2009-2015 ViaSat, Inc. All rights reserved. ViaSat and the ViaSat logo are registered trademarks of ViaSat, Inc. HAIPE is a registered trademark of the National Security Agency. All other trademarks
mentioned are the sole property of their respective companies. Specifications and product availability are subject to change without notice. Actual data rates achieved on individual platforms are a function of the satellite,
modem, and mobile antenna. 030-141213-008