Sematron USA
A passion for technology, innovation and with the knowledge to deliver.
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About Us

With over 25 years of experience in the satellite communication industry; Sematron/Holkirk offers a range of lightweight satellite uplink system designs.

The entire product range draws on real-world experience and the know-how of the founders, utilising, modern materials combined with advanced product design tools and processes, making them amongst the most compact, lightweight and user friendly satellite uplink systems available today.

Sematron/Holkirk manufacture and supply systems for use by DSNG operators, governments, international media organisations, oil and gas industries, medical applications and the disaster recovery sector.

Scorpion 'Tactical Man-Pack Terminal'

Fine adjustment on AZ, EL and POL with direct positional MPAD Readout

X, Ku and Ka band frequency options

Integrated assembly; modem, base, legs, elevation & feed are all connected so no assembly required

No exposed leads/cables

Up to 55W RF power

New Sapphire HEVC DSNG Encoder

HEVC encoding offers significant bit-rate reductions compared with legacy H.264 systems. The improvement is a bigger leap than that from MPEG2 to H.264 and savings of up to 50% are achievable.

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Sematron/Holkirk design and manufacture satellite uplink systems for use by governments, international media organisations, military, oil and gas industries, disaster recovery, web streamers and medical organisations for DSNG, VSAT and other internet-over-satellite and data applications.



Sematron delivers state of the art broadcast uplink solutions for many of the major news teams around the world, with our traditional Broadcaster products or the latest in IP content delivery with our Multi Bearer News gathering solutions (MBNG).

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Holkirk provide a range of tactical satcoms terminals, enabling tactical communications, especially up to the second orders and territory information, to be conveyed from one command, person or place to another, within a tactical force.

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Holkirk provide a range of VSAT satellite antennas for use in the application of vital communications for the energy market. With trailer, vehicle or ground mounted systems that are self-contained, simple and reliable in hot, dusty and wet conditions.

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Holkirk supports first responders and rescue teams with a range of VSAT satellite antennas for critical communications in the emergency response market. With vehicle or ground mounted systems that are self-contained, simple and reliable in hot, dusty and wet conditions.

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Broadcasting Products – DSNG Antenna Systems

Sematron delivers state of the art broadcast uplink solutions for many of the major news teams around the world, with our traditional Broadcaster products and the latest in IP content delivery with our Multi Bearer News gathering solutions (MBNG).


For applications where you need to be ready to cover a news story anywhere in the world, the IATA compliant TP-Broadcaster flyaway system is the proven solution for you. With 1.0m, 1.2m and 1.5m reflector sizes, and with up to 400W HPA capacity, the compact size and high EIRP makes the Broadcaster suitable for both SD/HD applications.


For fast response applications where the news story is local then the RM-Broadcaster drive-away system is preferable. With 1.2m and the EUTELSAT characterised 1.5m reflector sizes, and the capacity for either single thread or 1:1 redundant HPAs mounted in the antenna fairing (up to 400W), the RM-Broadcaster fits neatly onto most commercial vehicles.


Multi bearer News Gathering (MBNG) is a concept that will allow the delivery of your IP video over any available bearer, seamlessly with the peace of mind that if one bearer degrades during your broadcast your video quality will remain constant; this is ideal for content critical broadcasting and remote/challenging locations.

The MBNG solution can bond up to 10 cellular connections with two Ethernet ports for satellite connectivity and a wired internet. It also has a built-in WiFi modem to allow connection via our later3 WiFi mesh.



The half rack unit Sapphire HEVC DSNG 4K is a broadcast quality H.265 codec system, offering exceptional compression ratios on video resolutions up to 4K UHD.  Latency is critical in many broadcast applications including live news, sports and political feeds and the Sapphire HEVC DSNG 4K is built to minimise latency without compromising quality.

The 60ms end-to-end latency (70ms in 4K) is suitable for all your live events, it can be easily integrated into any DSNG truck or flyaway system to provide a cost-effective upgrade to the latest encoding technology.

  • Sapphire HEVC SNG Encoder
  • Sapphire HEVC SNG Decoder
  • Sapphire HEVC SNG Codec

Energy Products

Holkirk provide a range of VSAT satellite antennas for use in the application of vital communications for the energy market. With trailer, vehicle or ground mounted systems that are self-contained, simple and reliable in hot, dusty and wet conditions.


Our auto acquire solution enables communication with the touch of a single button, the system is deployed and ready to use in four minutes, providing instant WiFi Internet access.

All of our solutions are modem agnostic and can be used with all satellite modems (iDirect, Viasat, Newtec, Comtech, Advantech, Hughes, Gilat). Our ground based quick to deploy antenna range is outstanding value for money allows high quality performance at a price that suits all budgets.

USA Support

LinkUp Communications Corporation is a broadcast technology company that offers an incomparable level of expertise in technology and customer support. Our unparalleled influence within the industry assists you in delivering maximum return on your budget. Trust us to provide your business with down-to-earth transmission solutions.

  • Decades of transmission design and installation experience
  • A knowledge of products and deep understanding of the technology
  • Priority preference
  • Manufacturing support after the sale.


2639 B Lisenby Avenue Panama City
Florida 32405
(703) 217-8290

Contact Us

For more information visit or fill out the form below and we will contact you.