FM stereo will tend to get static more quickly than the monophonic sound due to its use of subcarriers, so stations may choose to extend the usable part of their range by disabling the stereo generator. Listeners can also choose to disable stereo decoding on the receiver, though loss of the stereo pilot tone causes this to happen automatically. Because this tends to turn on and off when at the threshold of reception, and the threshold is often set too low by the manufacturer's product design, manually disabling this when at the edge of the broadcast range prevents the annoying noisy-stereo/quiet-mono switching.