The headphone cord of the supplied stereo headphones works as an FM antenna, when you listen to the FM radio. Therefore, connect the stereo headphones to the (headphones) jack and stretch the cord as long as possible. When you listen to the FM radio with the built-in speaker, connect the stereo headphones to the (headphones) jack and stretch the cord as long as possible.
The IC recorder enters the FM radio mode.
If the stereo headphones are not connected to the IC recorder at this time, “Attach Headphones” appears on the display. In this case, connect the stereo headphones to the jack of the IC recorder.