That's a tough one. A radio signal could be coming into your system through a number of ways, but to be transmitted out your speakers it would most likely be coming from a microphone connection or directly from the preamp or output amplifier on your sound card. When the radio transmission starts try unplugging the microphone out of the back of your computer soundcard. Obviously there is a circuit on an input or output that is naturally tuned to the specific frequency, I'm sure by accident. If you have powered speakers this could also be the culprit. Try a different set of speakers. Most components are properly shielded and don't have these types of problems, but I have seen it happen in many pro audio systems. Start with the easiest components, If all else fails you might try a new soundcard. Hope that helps.
-Shawn
You can get a radio signal from space on your computer using SETI.
Wireless G works by transmitting information through the air in various radio waves. Your computer can pick up the signals and use them to computer information.
Sent.
Radio signals can travel through salt water.
transmitted via radio waves
Amplitude Modulation and Frequency Modulation. They are different methods of transmitting radio signals. AM is good for transmitting radio signals long distance FM is good for transmitting radio signals short distances but better quality
It has to always be broadcasting radio waves otherwise no devices will ever find the router.
In the microphone, there is a diaphragm, which converts the DJ's voice into an electrical signal. This signal is sent along the wire to the antenna, which broadcasts it into the ether. Your home radio receives the signal through its aerial, then converts the signal from an electrical signal to audio - which is detected by your ear.
Amplitude Modulation, the method of sending information through radio frequencies.
radar
Clouds interfere with radio signals because the density of the cloud can cause static with the radio signal. The air can also interfere with the signal.
radio signal bents around the curvature of earth and hence travel longer distance than the line of sight signal. At ultra high frequencies signal follows the line of sight path and hence maximum communication distance is limited due to curvature of earth for given height of transmitting and receiving antenna