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Satellite Modems

Industry-Leading Bandwidth Efficiency

We offer two industry-leading brands – Comtech EF Data and Radyne – and the widest range of bandwidth-efficient Satellite Modems in the industry. Our award-winning Modems support satellite-based mobile backhaul, enable broadcast transmissions, power mission-critical military communications, and facilitate connectivity to remote offices. We offer indoor, outdoor / ruggedized and card-based models.


Featured Satellite Modems

All Satellite Modem Datasheets

High-Speed Mid-Range Entry-Level Other


Rack of Satellite ModemsOur Satellite Modems enable deployment in remote and hub environments; we offer L-Band, 70/140 MHz and combination L-Band & 70/140 MHz systems. We offer data rate ranges from 2.4 kbps to 238 Mbps, and provide the options/configurations you need for operation with single or multiple transponders, Low Noise Block Converters and Block Up Converters. Our product line includes open and closed network Satellite Modems, and support for a variety of M&C methods. A wide range of data interfaces are available to support low- and high-speed data transmission.

Forward Error Correction (FEC) & Modulation

Our Satellite Modems support traditional and advanced methods of forward error correction to improve performance of error-prone channels. Examples of our FECs are VersaFEC®, DVB-S2, Low Density Parity Check Coding and 2nd Generation Turbo Product Coding. More Info »

Our modulators and demodulators support a range of modulation techniques, including BPSK, QPSK, OQPSK, 8PSK, 16APSK, 32APSK, 8-QAM, 16-QAM and 64-QAM. The combination of advanced FEC and higher order modulation provides increased coding gain, resulting in significant bandwidth and power savings.

DoubleTalk® Carrier-in-Carrier®

Our award-winning DoubleTalk Carrier-in-Carrier is based on Ratheon Applied Signal Technology’s patented “Adaptive Cancellation” technology that allows transmit and receive carriers of a duplex link to share the same transponder space. When combined with our advanced FEC and modulation, it delivers unprecedented savings in transponder bandwidth and power utilization. More Info »

Carrier-in-Carrier Automatic Power Control (CnC-APC)

This mechanism solves the power control optimization problem in a very general way for CnC links. It provides a unique opportunity for Satellite Modems on both sides of a CnC link to automatically measure and compensate for rain loss while maintaining a fixed PEB on the satellite during all conditions. More Info »

Adaptive Coding and Modulation (ACM)

Rain fade, inclined orbit satellite operation, antenna pointing errors, noise and interference can all degrade satellite link conditions. When utilizing ACM operation in our Satellite Modems, link margin can be converted into increased throughput of satellite links. More Info »

Integrated Router/Managed Switch

Satellite Modems with our integrated router/managed switch functionality allow seamless network convergence for data, voice and video traffic. Available options include header compression, payload compression, ultra low overhead streamline encapsulation and Quality of Service (QoS). More Info »


Our MetaCarrier technology is used to embed and detect Carrier ID information on modulated satellite carriers.
More Info »

Government Networks

We offer Satellite Modems ideally suited for military and government applications, engineered to meet a range of standards, including:

  • MIL-STD-188-165A
  • AES-256 TRANSEC / FIPS-140-2 Level 2 NIST
  • DISA Certified for operation on Wideband Global Satcom (WGS) and Defense Satellite Communications System (DSCS) satellite networks


To enhance the functionality of our Satellite Modems, we offer a variety of accessories, including 1:1 and M:N redundancy switches, interface converters, IP-enabled monitor & control interfaces, and more.

CRS-300 and OMS11

Modem Accessories Datasheets

CRS Series 1:1 Modem Redundancy Switches
CRS-300 1:10 Modem Redundancy Switch
CRS-311 1:1 Modem Redundancy Switch
CRS-500 1:N Modem Redundancy System
SMS-301 Redundancy Switch
ICS-75 Combiner Shelf
CIC Series Interface Converters
CiM-25 IP Enabled M&C
CDS-100 Diversity Switch
RCS11 1:1 Redundancy Switch
RCS20 M:N Redundancy Switch
STS11 / STS11L
RRS11 / RRS11L

Learn More About…

CollateralNetVue Integrated Management System Datasheet More Info »Redundancy Switch compatibility Matrix More Info »All White Papers More Info »Articles & White PapersSatMagazine Article – The Need for Robust Tools More Info »Other InfoCase Study: Shipping Industry More Info »Comtech-Branded Modem Manuals & Documentation More Info »Radyne-Branded Modem Manuals & Documentation More Info »Advanced Technologies & Patents More Info »Industry Recognition & Awards More Info »

SatTV talks with Daniel Enns on SCPC for Maritime,
Mobile Backhaul & Interference

SatTV Interview with Daniel Enns about 3G Backhaul

Carrier-in-Carrier® is a Registered Trademark of Comtech EF Data
DoubleTalk® is a Registered Trademark of Raytheon Applied Signal Technology
VersaFEC® is a Registered Trademark of Comtech EF Data
MetaCarrier® is a Registered Trademark of Comtech EF Data