Dose the ipod radio hook up work in Japan????

Answer 1

Yes. From the Apple description of the iPod Radio accessory:

If you're listening to a station that supports the Radio Data System (RDS) standard, you can even see song title/artist or radio station information in the iPod display.* The iPod Radio Remote supports FM stations from 87.5 to 107.9MHz (in both the US and European standards) and 76 to 90MHz (the Japanese standard). You can switch between the different standards when traveling.

By the way, I have the iPod radio, and in the setup for the device it has settings for Japan, Asia, Australia, Europe, and the US. The RDA system does work, but not in metal frame buildings.

Answer 2

not really