Extracting the radio firmware image from an Android phone How do you pull radio images off an Android device? Is there any way to do this?
You should root your phone and then with an app like Link2SD or even Root Explorer you could get the APK of the Radio app. In fact, with this mode you can get ANY APK of the system. 

Link2SD is more intuitive. But if you like the hard way go with Root Explorer and navigate to system/data/app and look for your desired APK