Tom, if you have a unit with the toothed antenna mast, something that helped in diagnosing mine was looking at the e24 FAQ and then checking the Antenna World website to identify a small roller wheel that helps the mast extend and retract. If your unit is still getting power (you can hear the motor do its work when you turn your radio on/off) then this message probably applies to you. Per the FAQ, I identified my Hirschmann as the Auta 6000 EL model. There is an exploded diagram of all its parts on the Antenna World website under the older Mercedes section. The culprit part was 4.11 (tension roller). Unfortunately, Antenna World has the worst response to sales inquiries (none by phone or e-mail) so you'll have to find another source for the parts. Hirschmann itself can be reached at (800)225-0524, don't know if they sell direct though. Hope this helps somewhat. Another alternative is to shell out some cash for a used unit from a totalled 6. Good luck.
Chris
: Does anyone out there have any ideas??
: I am not good on this stereo stuff at all. Give me a mechanical problem anyday.
: All replies are welcome, as usual.
: Thanks guys,

: Tom M. in PA