The function of a satellite receiver is to select a channel for viewing or listening from the available block of information and then to process this signal into a form acceptable by a television, monitor or stereo. Receivers that either continuously tune across the range of frequencies or that have programmable tuning sections can accommodate any of the various frequency schemes relayed via C-band and Ku-band spacecraft. Most of these brands are completely frequency agile, namely they can be tuned continuously across the range in question.e quality of a satellite receiver is judged by the clarity and fidelity of the television picture and crispness of the sound it produces. These subjective criteria can be partially estimated from the receiver IF bandwidth and threshold. These, in turn, are all determined by the care taken in designing and manufacturing as well as by the choice of circuit components.e audio section of a receiver designed for agile use in international or domestic reception must be capable of continuous tuning through the 5.0 to 8.5 MHz subcarrier band. Audio subcarrier deviations can also range from narrow such as employed on Intelsat spacecraft to wide for some high fidelity audio and data relays so receivers should, at the very least, have a wide/narrow audio bandwidth selection. Furthermore, receivers must be able to manage the audio processing employed on the broadcasts desired such as Panda I stereo or multiplex, discrete or narrow deviation Wegener stereo. De-emphasis and low-pass filters may also vary since 50 microsecond, 75 microsecond or J17 emphasis is used on satellite transmissions in various parts of the world.