There are not that much of radio stations available in Japan that broadcasts sports based radio shows and Reds Wave is one of those few radios broadcasting from Japan that gives their listeners an opportunity to enjoy some cool sports based radio programs along with other community related programs.
Reds Wave official website address is www.redswave.com
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.