On Thu, 07 Aug 2003 19:25:14 +0200, ketalar wrote:


Tnx agn.
I already use coax (on coax input) whose shield is connected to mains
earth.
I'll try some ferrite. I'll have a look in my junk yard, there could be
ferrite sleeve baluns (as described by W2FMI). 73,

On Wed, 6 Aug 2003 07:31:48 -0500 (CDT), Richard Harrison
wrote:
Coax could be your bon ami in eliminating the computer display noise if
used with FM/TV baluns. Ground the shield to the radio. Ferrite sleeves
around the coax may reduce transport of the interference on the exterior
of the shield to the radio.

Hi OM,

I was listening to SW when I read your note above. As a test I put
the receiver against the display tube of my computer and didn't hear a
whisper of noise. The receiver's speaker magnet did affect the tube.
In fact, I run the audio through the computer's sound board to play
over my Hi-Fi speakers (three components to do one job). However, the
antenna is about 50 feet away with ferrites protecting it. I also use
the receiver on FM for stations about 10 miles away. No noise there
either.

You may need to put the ferrites on the computer leads (the source of
the noise rather than at the receiver of the noise).

73's
Richard Clark, KB7QHC