sp6ryd pisze:

...
Oczywiscie nie oznacza to ze nie warto obnizac szumow LNA tylko tyle, ze czasem trzeba zwrocic uwage na inne kwestie

The above calculation also show that for getting very good receive performance for EME stations you should strive for a low antenna noise temperature. This means reduce spill-over from the feed, get low side lobes, do not use a big mesh net to make your dish surface (the smaller the better and a solid surface is best).