FM Strong Signal Capture and AM Overloading

FM capture is an unusual condition that occurs when traveling in the vicinity of a broadcast tower.
- If listening to a weak FM station when passing the broadcast tower, a stronger station may interfere without changing the tuning control.
- When passing the tower, the station may switch back and forth a few times before returning to the station originally tuned.
- Overloading is a localized condition which will not harm the receiver.
- When several broadcast towers are present (common in metropolitan areas), several stations may overload the receiver resulting in considerable station changing, mixing and distortion.
- Some overloading may also be noticed on AM but usually to a lesser degree.