Because your DVD player power supply emits RFI ( or radio frequency interference) and when you add cables to it they become a braodcast antenna for the RFI. Whne you plug into the VCR you are creating a longer antenna via the house wiring. Some power supplies in units are just that noisy.
The Flux Vortex is a situation where signals are scrambled and radio contact cannot be established due to interference in the atmosphere in a certain location.
Radio telescopes tucked into valleys can "hide" in there from interference that may be radiated into the side of the antenna array from earth sources. Better shielding equals less noise (interference) and greater resolution of a desired signal. Remember that radio telescopes are highly directional, and they don't "see" signals to the sides well. Now consider the "closeness" of a source on earth compared to any space object that is an image objective. There is no comparison. Any source of interference on earth will be a zillion times "closer" and the signal will be a zillion times "larger" than a space objective, even though the noise is "coming in from the side" to hit the dish. Bad news for the radio astronomer. Hide the dish, slash interference radiated into the sides of your dish and get good (better) results. Piece of cake.
2.4GHz microwave, a band assigned for low power unlicensed users (including microwave cookers) that must tolerate interference from any other user of the band, even if the interference makes them inoperative. I think g is also allowed on 4.8GHz microwave.
'Interference' is when something such-as radio-waves cause an electronic product to function abnormally. It can also be when things such-as these radio-waves are prevented from travelling by something like a microwave (the radiation is the culprit in this case).
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Sensitive devices like microphones working at verylow level can and will pick extraneous signal from many sources solution is to shield the cable so the signal will be hard to influence a double shield scheme is desirable whereby the interference will be routed to ground
You can connect your MP3 to your car player via a radio transmitter, such as the iTrip, or by hardline via the Aux In on the back of the player.
There was interference with the radio signal.
Wireless Networks
Electrical interference is messing with my radio reception.
Gordon William Ingram has written: 'Radio interference suppression' -- subject(s): Interference, Radio
Henry D. Moreland has written: 'Radio interference from conductor corona' -- subject(s): Radio, Interference
Interferometry
how i can connect the radio for my 92 accord wagon
Fiber-Optic
interferometry...
Prevent radio interference.