View Single Post
  #3   Report Post  
Posted to sci.electronics.repair
Adrian C Adrian C is offline
external usenet poster
 
Posts: 2,040
Default Computer Generated Noise

James Sweet wrote:
rijo101 wrote:
Hi Group , I have a problem with my home computer and or monitor
generating noise that is picked up on my HF ham radio rig .


This has to be an FAQ on amateur radio groups, or answered in full on a
ham related website.

The answer is basically clip-on ferrite chokes for external leads,
ensuring that the motherboard is grounded at all mounting points (no
plastic standoffs), ensuring the back plates of add-on cards and sockets
firmly and electrically contact the backplane slots, ensuring the edges
of the metal case cover firmly and electrically meet the rest of the
case, covering up holes larger than 1cm diameter etc. Get plenty of
adhesive copper tape/foam.

If all else fails, turn on "Spread Spectrum" in the BIOS setup ;-)

--
Adrian C