How the VSAT Technology Works

How the VSAT Equipment function

The Very Small Aperture Terminal (VSAT) is a satellite communications device that allows reliable data transmission via satellite using small antennas of 0.9 to 1.9 meters which is about 3.7 feet. VSAT is a plug and play device.

VSAT has got terminals arranged in a star configuration into the central hub station that is connected to the host computer.  Communication between the terminals has to pass through the network central hub processor. The VSAT technology does not send signal to each other or there is no direct communication between VSAT devices without a hub

The hub consist of three elements namely Radio Frequency Terminal (RTF), VSAT hub base-band equipment and the user interface

VSAT is the most fastest technology compare to point to point connection, or dial up connection due to the fact that VSAT deploy the use of procedure to make connection which other communication system either don’t have or are not reliable.

The VSAT entire network has got a satellite, main hub with an antenna measuring A5 to 11metres. VSAT configuration is made up of two segment , where one segment is known as the earth segment  - this segment has equipment both at the central hub and at the remote locations, the other segment is known as the space segment – VSAT pace segment is link to and from the satellite

Satellite segments in the sky serves as a radio frequency repeater, when VSAT send information to the satellites in the sky, it is received, amplify the information and retransmit on a higher frequency. As the information is being transmitted, much of the work is done in the ground where the hub controls and regulates the entire operation of the communication network

A hub in VSAT network consist of Network Management System(NMS) which accumulates data on the system  giving the system health check, and providing billing information. In VSAT network to operate it has to be in a position of geostationary orbit, which is relatively high from the ground normally around 38,800km from the equator.

There has to be a remote terminal which consists of two units one placed outdoor directly connected to the satellite while one placed indoors and connected to the user devices.

When connecting the VSAT network, the central hub is located near the user’s main office or at the central location where the host computer is. The hub normally enables the connection via satellite of all the VSAT terminals within the network and any other communication from host to the VSAT.


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Comments 21 comments

ashish jindal 6 years ago


finally i able to undrsnd th concpt.....


gopi dhiman 5 years ago

good to learn about vsat technology....

TRINITY 5 years ago

I appreciate ur good work....

hakeem 5 years ago

mean its been a wonderful thing to me, gettin full detail bout vsat technology

peter 5 years ago

VSAT TECHNOLOGY brings the world to your palm. It is really interesting. Thank God who has given mankind the wisdom.

Mark Whitehead 5 years ago

VSAT Technology will only increase in the future and reach areas of the world unheard of. This technology will not only be beneficial for the individual it will increase opportunity for small business owners of all kinds.

kashif 5 years ago

hy i am kashif amin now i understand the how vsat technology work.this is excellent enhancement in the scene of communication.

manish ranjan 5 years ago

its good to understand how the vsat work

tasie francis 5 years ago

now i understand hw the vsat works

kalithasu V 5 years ago

I under stood very clear,how work VSAT

SEEMANT SAHU 5 years ago

I am still looking for the carrier that carries data packet over radio frequency. Kindly let me know

Nitin 5 years ago

really good info...but would get better if diagram is included.

Valentine Amaechi 4 years ago

thank so much for this is so helpfull and also the Vedio thanks so much. please i will like you to be sending me books and some other this and totorials on VSat please my Email address is,

Biu Emmanuel 4 years ago

Its a wonderful experience having to know how the VSAT is installed. Kudos to technology

funmi 4 years ago

nice 1, helpful summary

prashant 4 years ago

thanks for this article it's good to understand vsat basics....

sajeev kumar M 4 years ago

Hi team ...

i got lots of information from this site. thank you ! thank you very much!

R Krishnakumar 4 years ago

Thanks for the information tagged in this page

Salim pooya 4 years ago

Think u form your kind considration in the cuase our knowlage in Advance

Mohamma salim pooya

Salim pooya 4 years ago

Think u form your kind considration in the cuase our knowlage in Advance

Mohamma salim pooya

Avinash jaiswal 3 years ago

good information about vsat.Thank you for giving it..

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