Since the Satellit 4000 basically has the same radio/receiver as the Satellit 300,  check the Satellit 300 for more info:

 

Please visit the following links for more information about the Grundig Satellit 300:

 

Ian Waugh's web, with a review of the Satellit 300:

http://www.geocities.com/grundigradioboy/s300.htm