I don't think so. The monitor switches scan frequency when going from Windows to DOS. There is something in the monitor that creates extra noise when scrolling. There is no noise on a static display.
There is nothing in the cable that knows what scan rate the monitor is using at the moment. The blips do not occur at 1024X768, only at 640X480.
However, moving to a 5/8 wave vertical completely solved the problem. There is no more noise on any frequency through the entire FM band, even though the vertical is only a foot from the monitor.
This problem has plagued me for several years, and this is the first time I found something that worked. Than you very much for mentioning EMI in an earlier post. For some reason that triggered the idea to try a different approach - and it worked!
That doesn't help when switching cards or checking for lint buildup. Or discovering the cpu fan is seizing and ready to fail.
Obviously, if you are in an environment where screwdrivers, paper clips, solder balls and coffee is flying through the air, you need some protection for your computers. But I have a very benign environment. I have no visitors to worry about, and everything is open the way I like. The covers on computers just slow me down and impede creativity. And that's a sin.
Do you know how difficult it is to replace the covers on a computer after fixing it? I just spent 1/2 hr fooling with the covers on my landlord's computer. What a pain. I'll leave mine off, thank you very much:)
I do have a fan salvaged from the freezer section in a fridge that mounts on the side of the computer during warm spells. It runs very quiet and helps reduce crashes on hot days. But obviously it's time to upgrade all the computers in the lab. And part of the new spec will be reliable operation at elevated temperature:)
Regards,
Mike Monett
Antiviral, Antibacterial Silver Solution: