There are a lots of radio in Japan and most of their programmings are highlighting some core things which are popular in Japan and Chupea FM 76.6 is no exception to that as they broadcasts the usual radio programs that other radios of Japan are famous for broadcasting.
Chupea FM 76.6 official website address is www.chupea.fm
Popular Japanish Radio:
Japan A Radio
J Jams Radio
Blue Anime Ivana
101 ru Japanese Music
If the Radio is extremely choppy and stops every 5 seconds, try listen to this Radio at different time.
Not all Radio Stations function for 24 hours everyday. If you can't listen to any Radio, try to listen at different time, as the Radio Station may stop during midnight according to its own country time zone.