First E1P-U2 Recording

I have recorded the following from Explorer-1 [PRIME] I couldn’t decode the data and when I listen to it, I hope I am doing something wrong because it doesn’t sound right.

Audio recording of E1P-U2 at 28-10-2011 12:40 UTC: audio

The signal was very strong ( 9+30db) frequentie used 437.505 MHz FM.