Yeah, I was going to chime in and say that the people saying their cell phones made noise on "speakers" were using the wrong word. It's actually the phone interacting with a poorly-shielded amplifier that makes the dit-dit-dit noises.
A friend of mine who used to live very near a mini-cab company would occasionally hear their dispatcher faintly over his speakers which were plugged-in to a hifi amplifier that was
switched off, but I imagine that that was with much higher transmit power, and much dirtier (probably illegally so) sideband than any mobile phone.
Peter
Previous Topic
Index
