Castor Satellite Communication Services

VSAT C-band

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Castor Networks VSAT C-band

We cover Africa with 3 VSAT C-band satellites. For C-band, you need a 2.4 or 1.8 meter antenna. C-band has a frequency band of 3.7 – 4.2 GHz for downlinks and 5.925 to 6.425 GHz for uplinks. If it is important to have the highest availability on your connection, then C-band is the ideal option.  

All about VSAT C-band technology

C-band was originally defined by the ITU (International Telecommunication Union) as the first satellite band. Its frequencies range from 4 to 8 GHz. A range widely used today by terrestrial microwave backhaul links. This is mainly due to the fact that the sub-6 GHz band is license-free in many countries. 

The signals of the VSAT C-band technology are less focused compared to higher satellite frequencies, as with KU-band technology. This is due to the longer wavelength in C-band. What this means? Signals that are less focused are less affected by rain. This is also known in the industry as ‘rain fade of satellite signals’. Because of this, C-band is more reliable than KU-band in rainy environments such as the jungle or DRC. With VSAT C-band technology, the lower focus of the band signals is only ranging from 0.4 to 1 dB. Another advantage of these lower focused signals: they offer a larger coverage area.  

Compared to KU-band, C-band does require a larger dish to receive the signals from the satellite. The size varies from a diameter of 2.4, 3 to 3.7 meters. Therefore, when you make the choice for VSAT C-band you need more expensive equipment than when you choose KU-band. 

Are you interested in knowing more about KU-band? You can read more here or contact us for more information.  

Vsat Internet Provider - Castor Networks

The advantages of VSAT C-band are:

  • Low frequency avoiding weather interference
  •  A 99.7% service availability
  • Unlimited use of the internet
  • Dedicated and shared connections
  • A stable, fast and reliable connection with a latency between 550-650 ms

When to use VSAT C-band 

VSAT C-band is perfectly suited for rainy environments, for example tropical areas in Africa. In addition, from a more commercial perspective, C-band technology is the best solution for satellite applications that require higher bandwidth. Why? License fees for C-band bandwidth are more affordable than fees for KU-band.  

The C-band technology is often used in the mining, and oil & gas industry, but also banks in Africa are using this type of satellite internet. Castor Networks also provides effective satellite internet solutions for NGO’s. You can read more about this here. 

NGO Vsat Solutions | Castor Networks
The benefits of Vsat Internet - Castor Networks

The benefits of choosing Castor Networks VSAT C-band 

  • We are a specialized VSAT Network Operator: we own the VSAT platform, teleport antennas and we are right at the source in case of system failure or need for technical support;
  • We are backed by strong 24/7 NOC support, on-site installation and support capabilities; 
  • As a mid-sized company, we can be flexible and tailor our services to your requirements; 
  • We have our own IT department and will optimize our C-band satellite internet services to work optimally with your IT infrastructure (LAN).

Learn more about our VSAT C-band technology

Our staff is available to answer all your questions about C-band. Please contact us by phone, email or our contactform. 

T: +31 (0) 88 646 0100 | E: