Preserve signal quality ahead of the first LNAThe worksheet uses Friis noise-factor arithmetic for a four-stage matched chain. Passive loss before the LNA is more consequential than the same loss after substantial gain.Preserve signal quality ahead of the first LNAAntenna gain and amplifier gain are different quantities.Before LNALoss LpreFirst amplifierGain G; noise FAfter LNALoss LpostReceiverNoise FrxCompare loss placement using linear noise factors, not a sum of dB.A matched cascade calculation is not a satellite reception or position model.³Ô¹Ïtv engineering illustration · conceptual, not to scale · no measured product data