HARDWARE / PRODUCTAdded 9 Sep 2026

Ku-band Terminals

Viasat, Inc.
Ku-band Terminals

Viasat Ku-band airborne terminals provide reliable SATCOM communications for mission-critical flights, enabling full-motion video, voice, and classified network access.

Typed specifications57 values

Discloses 7 of 10 fields engineers filter by in this category (category median 3).

Frequency band
Ku
Receive · datasheet p.2 Ka
Mass
2 500 g
ACU · datasheet p.2 2 494.76 g ACU (2.5 kg)  |  9 979.02 g antenna (10 kg)  |  4 082.33 g inertial reference unit (4.1 kg)  |  4 082.33 g modem MBR-4020 (4.08 kg)  +1
Frequency range
10 950 MHz
min · Receive Frequency · datasheet p.2 14 000 MHz min · Transmit Frequency  |  12 750 MHz max · Receive Frequency  |  14 500 MHz max · Transmit Frequency  |  19 700–21 200 MHz Ka-band, receive  +3
Envelope (L×W×H)
12 in.; 30.5 cm
product page 11.0 x 8.0 x 3.4 in.; 28.0 x 20.3 x 8.6 cm ACU  |  Ø12.4 x 13.1 in.; Ø31.5 x 33.3 cm antenna swept volume  |  7.5 x 7.5 x 6.0 in.; 19.0 x 19.0 x 15.2 cm inertial reference unit  |  17 x 13.75 x 1.72 in.; 43.18 x 34.93 x 4.37 cm modem MBR-4020  +2
Data rate
50 000 kbps
full-duplex, error-free · datasheet p.1 20 000 kbps max · return link streaming, up to (requires MBR-40XX modem)
Supply voltage
28 V
nom. · ACU, modem VMBR-1500, IRU · datasheet p.2 28 V ACU  |  100–240 V modem MBR-4020, 50/60 Hz
Power consumption
480 W
product page 235 W max · ACU, Ka-band  |  350 W max · ACU, Ku-band  |  21 W max · inertial reference unit  |  120 W max · modem MBR-4020  +2
Data interface
other
ARINC 429 navigation data (IRU) · datasheet p.2 RS-232 console  |  Ethernet data 10/100/1000BASE-T; console
Operating temperature
-55–70 °C
antenna and ACU · datasheet p.2 -55–70 °C Antenna Control Unit (ACU)  |  -32–60 °C inertial reference unit  |  -30–60 °C modem MBR-4020  |  -20–60 °C modem VMBR-1500
Function
transceiver
two-way airborne SATCOM terminal · datasheet p.1
Link use
ground terminal
airborne user terminal (light aircraft) · datasheet p.1
Link protocol
proprietary
datasheet p.3
Flight heritage
Hundreds of thousands of flight hours on deployed government aircraft (King Air, PC-12, De Havilland, Caravan); FAA and JITC certified
datasheet p.1
Encryption
AES-256
optional, FIPS 140-2 · datasheet p.2 NSA Type 1 optional, HAIPE KG-250X  |  AES-256
Satellite network
Viasat
Viasat worldwide Ku-band network · datasheet p.1 other WGS (Ka-band antenna WGS certified)
EIRP
46.5 dBW
min · Ka-band · datasheet p.2 42.5 dBW min · Ku-band
G/T
10.2 dB/K
min · Ka-band · datasheet p.2 8 dB/K min · Ku-band, < 11.55 GHz  |  9 dB/K min · Ku-band, > 11.55 GHz

Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.

As published by the supplier12 lines, in the manufacturer's own wording
Terminal
VMT – 1220 LA
Antenna type
Parabolic; tail or fuselage mount
Effective size
12 in.; 30.5 cm
Terminal weight
46.5 lb.; 21.1 kg
Terminal power
480 W
Aircraft
Fixed wing, Class 3/4/5 UAS
Terminal
VMT - 1220 HM
Antenna type
Parabolic; hatch mount
Effective size
12 in.; 30.5 cm
Terminal weight
276.5 lb.; 125.4 kg
Terminal power
950 W
Aircraft
C-130

About

Viasat has a strong history of outfitting a wide variety of aircraft with industry-leading Ku-band terminals. These terminals allow users to receive full-motion, high-definition video over-the-horizon, make phone calls, conduct video conferences, access classified networks, and perform mission-critical communications while in flight. With thousands of flight hours logged, these terminals have powered various missions, including enroute command and control (C2) and VIP transport communications, real-time ISR with HD full-motion video streaming, search and rescue (SAR) missions for live “eye-in-the-sky” support, and border protection and patrol. Viasat Ku-band terminals are comprised of a small Ku-band antenna, modem, and an antenna control unit integrated into the existing aircraft’s cabin network. With Ku-band satellite antennas as small as 12 inches and a total shipset weight of around 35 pounds, these Ku systems are designed for easy roll-on/roll-off or fixed installation on a wide variety of airborne platforms. When installed, they deliver game-changing capabilities such as actionable intelligence to improve mission success and reduce time to action, as well as increased situational awareness and multi-domain battlespace visibility. These terminals can be paired with Viasat’s VGnet service, operating over their Ku-band network, to provide ample bandwidth for two-way broadband and mission-critical capabilities.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.viasat.com ↗

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