PORTABLE APPARATUS WITH BUILT-IN FM TRANSMITTER

摘要

A portable apparatus with a built-in FM transmitter, where an antenna has a high degree of freedom in installation, less likely to break, and has enhanced transmission efficiency. A portable music playback apparatus (100) comprises an audio playback device (10) for generating an audio signal to be transmitted, a stereo modulation circuit (22) and an FM modulation circuit (24) for FM-modulating the audio signal to generate a carrier wave signal receivable by an FM receiver, an external transmission antenna (102) removably provided exposed to the outside of a housing, and a transmission circuit (26) for transmitting the carrier wave signal through the external transmission antenna (102).