Three male warfighters looking at a laptop in a tactical operations center

Viasat SATCOM military modems and C4I networking

High-speed, high-capacity tactical networking backbone to reach virtually every corner of the battlespace

Fast, reliable, at-the-halt and on-the-move communications

Viasat powers C4I networks like U.S. Army WIN-T, US Air Force GBS, DISA Teleports, NATO SGS, and many more with a wide range of networking topologies and SATCOM technologies. With DoD MIL-STD and NATO designations, Viasat has a history of providing satellite modems that are the military and de facto standards for superior bandwidth efficiency, capacity, security, and performance. 

HUMVEE under a camo tent surrounded by barbed-fencing
Diagram demonstrating point-to-point, hub/spoke and full mesh military waveforms

Modem, waveforms, and satellite network systems

Viasat SATCOM modems deliver warfighters fast, secure access to information across all domains, operating over  X, C, Ku, Ka satellite bands and the following  waveforms: LinkWay, a full-mesh, bandwidth-on-demand MF-TDMA military waveform; EBEM, a point-to-point highly efficient FDMA waveform; and Arclight, a Hub-spoke  waveform, especially tailored for air and ground mobile platforms. 

Product image of the Viasat MD-1366 EBEM satcom modem
EBEM MD-1366

DoD-standard for strategic and tactical FDMA point-to-point links.

Product image of the Viasat LinkWays2 SATCOM modem

IP SATCOM for fixed, COTP, and COTM tactical terminals.

Product image of the Viasat ruggedized CBM-400 modem

Software-defined SATCOM modem, supports FDMA, MF-TDMA, and high-capacity waveforms enabling IP connectivity for fixed sites, COTP, and ground COTM applications.

Which modem is right for your mission?


Network Topology


Supported Waveforms

Maximum Throughput (Mbps)

Form Factor

EBEM MD-1366

Point-to-Point (FDMA, SCPC)

Fixed, Maritime, Airborne

MIL-STD 165A, MIL-STD-188-165B / STANAG 4486 ed. 3 (EBEM)

Tx: 155
Rx: 155

1U 19” Rackmount


Hub-Spoke, Full-Mesh, Hybrid (MF-TDMA)

Fixed, Maritime, Ground mobile

LinkWay (Viasat)

Tx TDMA: 14
Rx TDMA: 14
DVB-S2  Rx: 80

1U 19” Rackmount


Point-to-Point, Hub-Spoke, Full-Mesh, Hybrid

Fixed, Maritime, Ground mobile

MIL-STD-188-165B / STANAG 4486 ed 3 (EBEM)
LinkWay (Viasat)
ArcLight (Viasat)
HCKa (Viasat)

Up to 400 Mbps combined (based on waveform)
Tx: Up to 155
Rx: Up to 155
DVB-S2 Rx: Up to 170

1U 19” Rackmount,
Embeddable Module,
Ruggedized Outdoor Enclosure,
Embedded Network Control Center (eNCC)

Light gray gradient with angular features

The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.