"You already knew you could use a Linux box to create your own
"Internet radio" station that streams MP3s onto the 'net, right?
But did you know you could turn your Linux system into a real radio
transmitter, using nothing but the system's parallel port as the
wireless media interface?"
"Well, don't get too excited . . . because this is really just a
very clever way to demonstrate the real-time capabilities of a
popular real-time Linux add-on, called RTAI (the Real-Time
"...The demo software creates a radio carrier in the "long wave"
radio spectrum, using a task running under RTAI to turn parallel
port data lines on and off at a fast rate. The carrier is further
modulated with a lower frequency, in the audio range, to produce
music. Now for more detail."
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