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Recently, Unknowncountry.com received a letter from a listener and Unknowncountry reader who attached an audio file of a strange sound that had been coming out of his television.
To Whitley Strieber's surprise, he has been hearing the precise sound coming out of his bedside clock radio. Of course, Whitley had assumed that the sound was a defect. But now it's apparent that it is some sort of a transmission that affects the entire FM band, from the lower frequencies used by TV ....
The most common (and abrasive) form of interference is the buzzing sound that seems to come without warning when a mobile phone is sitting near a susceptible speakerphone or stereo system. Curiously, once the phone is picked up and a conversation is in process, the interference generally disappears. The reason for this is that mobile phones adjust their transmit power once a call is established; if there’s a station nearby, a mobile phone will usually operate at fairly low levels while the call is going on. However, when exchanging data such as ringing and messaging, they operate at full strength for a short time, which can be enough to be picked up in a susceptible device, and be sent to either the near or far end (or both). Another good example of this is when you’re driving your car listening to the radio with your mobile device nearby, when the buzzing begins. Nine times out of ten, you can expect a call, email or voicemail to arrive right along with the buzz