Comment Re:Modulator or AUX input (Score 2, Informative) 135
The modulator goes in the antenna lead between the antenna and the radio. When the modulator is powered on it cuts off the antenna signal and introduces your signal into the radio on a set frequency.
So it's still going the FM route only it's cutting off all other incoming signals.
So it's still going the FM route only it's cutting off all other incoming signals.
