Capture effect has nothing to do with the operation of PLL's. Most FM radios have a Limiter stage which strips of all Amplitude variations. This means that any

Capture effect has nothing to do with the operation of PLL's. Most FM radios have a Limiter stage which strips of all Amplitude variations. This means that any strong signal in the passband will completely suppress a weaker signal. https://en.wikipedia.org/wiki/Capture_effect https://en.wikipedia.org/wiki/Capture_effect