"Ayesha" wrote in message
. uk...
I have a coax lead coming from the top of an ICOM ATU. This has a core
and a screen. It comes up through the deck to an insulated backstay.
Question : should I ignore the screen, and simply cut it back? Or
should I connect the screen at the ATU end to the ship's earth?

There should not be a coax in the first place. The wire between the ATU and
the backstay is part of the antenna system and can carry several thousands
volts. You should use high voltage antenna wire for that.

Meindert