The words contained in this file might help you see if this file matches what you are looking for:

...Content design of the satellite links link budget and their interpretation introduction a is defined as an earth station connection segment called uplink downlink consists transmission or system establishes resources needed for given service to achieve performance objectives probably most basic in microwave communications since line sight path typically exists between space this means that imaginary extending transmitting receiving antenna passes only through atmosphere not ground obstacles free attenuation determined by inverse square law which states power received inversely proportional distance there are however number additional effects produce significant amount degradation time variation these include rain terrain such absorption trees walls some less obvious impairment produced unstable conditions air ionosphere...