Do not always trust the soundman.
When you get a contact from him and you are following the bearing and suddenly he "no sound contact" you, hit the "h" key and follow the sound yourself in the sound room, tap the large control in the sound room and it will increase the volume, the contact will show up on the map.
As the other fellows said, when you are comfortable with the game, download GWX 3.0-your experience with the game will greatly intensify.
Good hunting!
