[RFI] Computer monitor RFI

[dj2001 at mn.rr.com]

>The Sony 15" monitor connected to the computer I am using with my 
>rig generates an enormous amount of RFI: S9 signals at intervals on 
>20m and up, the intervals depending on the screen resolution I set. 
>The interference stops if I turn off the monitor or when it blanks 
>after the set timeout interval.
>
>The video cable has its own integral RFI filter, and I have tried 
>adding a choke to the power cord and an additional one to the video 
>cable, but to no avail.
>
>Any ideas?
>
>Alan AB2OS


Alan,

No real good ideas other than you should have got a Envision monitor. 
I have one here, it's a 17 incher and I paid a little over $100 for 
it.  It generates no noise that I know of.  My Sony 15 inch did too.

You might try changing the resolution and see if the hash changes 
frequency.  I assume you are using a grounded outlet for power? 
Could it be your video card inside the computer generating the hash?

Good luck

Dale, K9VUJ