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Receiver performance



I posted a message a couple of days ago, regarding the
receiver performance of a satellite earth station. This 
"figure" is being calculated as the G/T. ( Gain over temperature)

A receive antenna can give you a good gain, but if the
LNA / LNB or ilumintation of your antenna is no good,
you will have a poor G/T.

A very good description of G/T measurement can be found
on following address: http://www.setileague.org/articles/g-t.htm

You can test your system performance using the formulas
in the above mentioned page by using the sun as a noise
source. The sun data can be found at following address:
gopher://solar.sec.noaa.gov/00/latest/curind

The higher the value, the better your receive performance.

Noise fugure of your LNA is one thing, but the overall
performance is what it is all about.

Thanks to i8CVS Domenico and ON1BPS, Peter, to give
me the addresses where to find the info...

Best 73's
Eddy ON7UN

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