Editing Pilot signal (section)

=== Television ===
In some [[color television]] standards, the [[color burst]] placed after every sync pulse on visible lines (as done in [[PAL]] and [[NTSC]]) is the pilot signal to indicate that there are color subcarriers present and allow synchronizing the phase of the local oscillator in the demodulation circuitry. However, [[SECAM]] features continuous subcarriers which don't need their phase tracked due to being [[Frequency modulation|frequency-modulated]] as compared to the [[Quadrature amplitude modulation|QAM]] approach of the other systems, thus making it unnecessary.

In the [[NTSC]] television system, a pilot tone of {{frac|9|572}} MHz (15,734.27 Hz) is used to indicate the presence of [[Multichannel television sound|MTS]] stereo.