*For the systems without automatic satellite tuning capability. *Connect to your LNBF and receiver to the satellite finder to track the clearest setting for the satellite you wish to tune to. *Meter with LED displayer helps you know the strength of the signal clearly *Meter with audio tone helps you align satellite antenna to signal. *Audio signal gets louder at the better setting. *Works with multiple dish systems. *Close or open the audio tone *With four steps gain for the satellite signal,you can increase or decrease the gain of the meter