| If you have radio noise caused by
your engine (noise that increases or decreases with engine speed) this
filter might help you.
Engine noise can enter
your radio TWO ways. Through the power wire source and through the
antenna. This filter will reduce the noise coming in the power
To be sure this filter can help you, unplug
the antenna from your radio and start the vehicle and rev the motor.
Turn up the volume on radio and try to see if the noise went away, or at
least most of it did. If the noise stays with no antenna connected
this filter WILL help you allot. If the noise goes away after removing
the antenna, than this filter will NOT help you. In this case you will
need to filter the noise at the source (like the alternator or fuel pump).