At one office I worked at, we were within sight of the WJR AM 760 broadcast tower. Literally. We could see it from our office windows. Our warehouse had a long stretch of wire from the control box in the office to the telephone unit in the back of the warehouse, and we would pick up several radio stations jumbled together over every phone in the building. We had to put filters on all of the handsets in order to keep the RFI out of the calls. It was loud enough (especially WJR's broadcast) that you could sometimes barely hear the caller.An “off-label” speaker event - my cell phone started broadcasting the low power tv station I was watching while I was trying to make a call. Had to switch the tv to a station with no signal.
Beats the old days of CB radios, when someone with an illegal linear amplifier attached between the CB radio unit and the antenna would drive down the street and their voice would loudly break through whatever you were listening to in the house...