| 摘要 |
A broadcasting method using a PDA as a signal relay device has the steps of (a) modulating a sound file intended to be broadcast, wherein the sound file stored in a PDA is modulated in the form of a radio wave at a set frequency, (b) transmitting the modulated radio wave, (c) demodulating and (d) playing the radio wave to obtain the sound file by any radio device. A broadcasting apparatus utilizes a modulating module that is integrated into a charging base of the PDA to modulate sound files stored in the PDA. the modulated sound files can be transmitted in the form of a radio wave and then be demodulated and played by any radio receiving device.
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