Satcoms UK - Satellite Communications Information  Homepage

English Translation Italian Translation Spanish Translation French Translation German Translation Portugese Translation   
Russian Translation Arabic Translation Japanese Translation Hindi Translation Chinese Translation Hebrew Translation   
            Website Translations
 Home Tutorials Articles Satcoms Forum Guest Forum Job Vacancies Uplink Simulator
Industry News Events Tools Link Budget VSAT Sales Member Login Satcoms UK TV

Satellite Link Budget Calculators:


Please Note: If you are looking for calculations such as G/T, Eb/No, Antenna Gain, EIRP or C/No then try the 'Useful Calculations' Pages in our 'Tutorials' section.

These are the free online satellite link budget calculators. Simply follow the instructions below to use these calculators. We hope that you find these useful and that you so that you can use them when ever you want.


Fill in the empty boxes within the grey sections and alter any of the existing parameters to match your system requirements. The blue sections will be calculated for you. The existing values are not representative of any particular satellite or antenna but are fairly common values.

By clicking in a parameter box the original data will be cleared so that you can easily enter new values.

When you are ready, click on 'Calculate'.

Click here for a System Noise Temperature Calculator.

Click Here for the latest weather satellite image for the UK & Europe.

Terminal A
Uplink Frequency (GHz)
Tx Antenna diameter (m)
Tx Antenna Efficiency
Tx forward power (dBW)
Tx Bandwidth (KHz)
TX Antenna gain (dBi)
Uplink path loss (dB)
Uplink C/N (dB/Hz)
Satellite G/T
Satellite EIRP
Satellite Range
Satellite PFD
Uplink C/N
Downlink C/N
Terminal B
Downlink frequency (GHz)
Rx Antenna diameter (m)
Rx Antenna Efficiency
System RX noise Temp. (dBK)
Weather Margin (dB)
RX Antenna gain (dBi)
RX Antenna G/T (dB/K)
Downlink path loss (dB)
Downlink C/N (dB/Hz)


For more advanced users, here is a more detailed link budget calculator. To use this you will need to know many more parameters for the Transmitter, Receiver and Satellite. As above, fill in the grey sections and the blue sections will be calculated for you. Click Here for a step by step Link Budget guide..


Terminal A
Terminal B
Tx Freq GHz Transl Freq MHz Rx Freq GHz
EIRP dBm EIRP dBm C/No dB/Hz
G/T dB/K G/T dB/K G/T dB/K
Lat deg C/No Sat dB/Hz Lat deg
Long deg Long deg Long deg
Elevation deg Ant Gain dBi Elevation deg
Azimuth deg Transp Gain dB Azimuth deg
Path Loss dB Req'd EIRP dBm Path Loss dB
Losses dB % EIRP % Losses dB
Margin dB Pwr @ Sat dBW Margin dB
    Data Rate    
    Eb/No Req'd    
    Link Margin    


Computer Aid International is a UK-registered ICT for development charity which aims to reduce poverty through practical ICT solutions. We collect IT equipment for distribution in hospitals, universities, schools and not-for-profit organisations in over 100 countries. M?decins Sans Fronti?res (MSF) is an international, independent, medical humanitarian organisation that delivers emergency aid to people affected by armed conflict, epidemics, natural disasters and exclusion from healthcare. MSF offers assistance to people based on need, irrespective of race, religion, gender or political affiliation. The Red Cross EU Office monitors and engages in relevant EU humanitarian aid and civil protection issues linked to the priorities of the Red Cross and Red Crescent Mouvement. Myeloma UK provides information and support to all those affected by myeloma and aims to improve treatment and care through research, education and raising awareness. Macmillan Cancer Support improves the lives of people affected by cancer. We provice practical, medical and financial support and push for better cancer care. Cancer affects us all. We can all help. We are Macmillan.
 Home Tutorials Articles Satcoms Forum Guest Forum Job Vacancies Uplink Simulator
Industry News Events Tools Link Budget VSAT Sales Member Login Satcoms UK TV
Satcoms UK - Satellite Communications Community Website
© Satcoms UK 2002 - 2015 , All rights reserved.
Privacy Policy | Terms of Use