At last I could receive and decode AibieSat-1 CW. The signal is very weak, but it's exceedingly a clear sound.

9:10-9:22 UTC, 2 May 2012, Ele 51 S-W-WN, 437.472 MHz CW http://www.ne.jp/asahi/hamradio/je9pel/20502aub.png http://www.ne.jp/asahi/hamradio/je9pel/20502aub.wav

JE9PEL/1, Mineo Wakita