Your loop is sensitive to magnetic fields, such as might be produced by the
horizontal deflection system of a Television set or computer monitor, or by
a switching supply in a computer. The best way to minimize that problem is
to orient the loop to null out the interference. An additional way is to
move the loop as far away from likely sources of interference as possible.
Power the antenna and R75 from a car battery or portable DC source and take
them outside and roam around to see if you can find out where the noise is
coming from.

73, Chuck W6PKP

"Mark Veldhuis" wrote in message
...
Hi,

In article ,
says...

Sounds like a ground loop. If you are using the Antenna Interface,
make all connections that give you this interference. Now, disconnect
the power lead to the Antenna Interface. If the noise goes away, you
have a ground loop that is associated with where your power to this
unit comes from, and what you are using as the ground for your
IC-R75.

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?
I'm asking because I came home tonight, connected the antenna, and...now
noise, no buzz! That too happened before, but the noise was back less
than half a day later.
So, could this still be a ground loop? And if so, how do I go about
getting rid of it? Is it an easy thing to do for someone non-technical
like me?

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

Thanks for the help!
--


73',


Mark Veldhuis.