I wonder whether I could be given some help on a particular problem I am encountering. I have a dish with two LNBs, one for Hotbird and one for Astra. Each LNB has two feeds. On one feed, the horizontal channels on Hotbird lock,on the other they do not. Vertical channels lock on both feeds. The one on which they do not requires a longer cable, but the current source is ok at 18 v at source.

I am using Dreambox 500 on both feeds.

Could somebody explain what is happening and what I can do to remedy the situation?

Many thanks