A link budget is a chain of referenced termsThe worksheet sums a transparent link budget. Installed realized gain already includes antenna mismatch and radiation efficiency, so those effects must not be subtracted twice.A link budget is a chain of referenced termsUse gains in the actual link directions; separate feeder and propagation losses.Radio outputConducted powerTX installationRealized gain − feederPropagationFree-space + excess lossRX installationRealized gain − feederDecisionThreshold + fade reserve³Ô¹Ïtv engineering illustration · conceptual, not to scale · no measured product data