[ct-user] Computer Noise

Wilbert Knol w.knol at niwa.co.nz
Sun May 2 17:27:31 EDT 2004

Those small, outboard  switch-mode power supplies that come with some 
of the cheaper LCD monitors are likely to be your main source of QRM.

I have a Toshiba notebook that runs off one of those. Unless powered 
from batteries, it rubs out the HF & VHF bands. 

Festooning the supply with beads helped, but didn't eliminate the 
hash. So I built an old-fashioned linear supply for it. No more QRM.

Wilbert, ZL2BSJ

More information about the CT-User mailing list