In article ,
says...
Hi Gerhard,

One way that is quick, but not always effective, is to put a "ground
breaker" between your equipment's power supply and the mains. I'm not
sure if this is available for European AC connectors.

Another way is to use extension cords so all equipment that is powered
connects to the same mains outlet.

You say the antenna is "properly grounded." This is suspicious. Does
it have a wire going to the SAME ground (earth) connection as the
mains? If not, then connect the two together. If the first two don't
work (and even if they do), your problem is probably from this "proper
ground." The reason for the name "ground loop" is that you have two
different paths to ground (two different ground connections separated
by earth).

73's
Richard Clark, KB7QHC

Hi Richard,

I put an earth wire between the shield of the areal cable and the earth
of the powerpoint which fixed it.

Cheers


--

Looking for a dream holiday?
http://www.palmcove.net/
Palm Cove- Winner of the Award "Australia's Cleanest Beach"