Formula for SNR

wallycharlo

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Folks,

I'm looking for a formula for Signal-to-Noise ratio for a satellite Rx setup, i.e. where SNR can be calcualted using metrics such as Antenna Gain, Receiver Noise Figure, LNB Noise Figure, Transmission line loss, etc, etc.

Perhaps one of you learned folks can point me in the correct direction? Funnily enough I'm pretty sure that I knew this about 20 years ago during my college days but it's now long forgotten :)

Regards ... Wally
 

hexah

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My Satellite Setup
motorized Gibertini 85cm, fixed dishes from 1m to 64cm, generic FTA HD RX, TBS DVB-S2 PC card, a pile of bits and pieces
My Location
Hadrians Wall
Loads of useful calculators here including downlink budget calculators.

Obviously they are only as good as the inputs and weather conditions allow.

http://www.satellite-calculations.com/
 
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