Originally Posted by reinreb
Any one have any ideas on this type of repair.
I suspect you have a XM (Onyx) radio installed in your TT. If so, I would seal off the existing wires (or just pull them out and plug the hole) and go get yourself a Home Kit:
Shop XM Radio - Accessories
The portable antenna for the XM and Sirius radios easily acquires a signal through a conventional TT's roof i.e., you don't need to install it outside. We've got a docked XM radio that came with the TT and sports the roof mounted antenna and it works ok except when we're in the trees or on the north side of the mountain. The issue is associated with the relatively low southern orbit of the XM satellites. We also have an old Sirius Starmate radio and can typically get better reception than the integral XM unit by using the Sirius Home Kit antenna positioned inside the TT.
Hope this helps...