[Ravian]

Originally Posted by gwailoh

"because FM radio is frequently received in mono, even on “stereo” radios, due to signal-quality-trigged mono blend circuitry" -- Frank Foti & Bob Orban, What Happens to My Recording When It's Played On the Radio?

the signal of FM stereo in radio's are mono and there is a multiplex circuit in the radio
that is a switch that switches the mono signal reeeaaal fast between L and R
so FM stereo aint real stereo. and the FM stereo led indicator go's on wen there is a FM signal that is broadcast from the station that comes with the FM stereo signal
(i forgot the Mhz of the indicator led on status).