On Fri, 29 Jul 2005 04:41:27 +0200, Mark Veldhuis
wrote:

I remember trying that before, and it did stop the noise indeed.
But... If it's a ground loop, wouldn't it be there all the time?

Hi Mark,

Your experience indicates otherwise. This is not unusual. I've had
ground loops that depended on the weather. As it is frequently rainy
here (Seattle), my problems would come and go with the CHANGE in the
weather.

how do I go about
getting rid of it? Is it an easy thing to do for someone non-technical
like me?

Move the Interface power supply to the same outlet that you use to
power your R75. Check the ground of the AC socket and make sure your
wiring is not reversed (usually done with a small tester sold in most
hardware stores).

I am not using any ground for my R75 at the moment.

Unless you are running solely off batteries, have no other connections
to the R75 whatever, naturally you are connected to ground. You
simply don't know how it is getting to the R75 is all, and this is the
usual configuration of those who suffer from ground loops.

With my previous
antenna setup, a longwire with MLB, I had a ground rod. And it did
absolutely nothing, it didn't make any difference at all...

That's unusual to say the least. But it points out that whatever
ground you thought you had in the "ground rod" was simply duplicating
what already existed through the AC distribution system.

Another way to confirm is to replace the Interface power supply with a
battery pack.

73's
Richard Clark, KB7QHC