Problem solved! Wednesday 04 April 2007 Dear Mr. Munro! After having reconsidered the entire problem, I strongly wanted to check the wiring going directly to the antenna. By the way, I forgot to tell you that we stepped the missen mast this winter, checking into this I found a crossing of the cables in the connection box on the missen mast. Having crosschanged the cables, voila: everything works like a charm. Sorry for taking your time, and let me express my satisfaction with the product, both on several North Sea crossings and on trips to the North of Norway, including Spitsbergen. Best regards Bjorn Lorentzen