Hi Mark, I have to echo W3FPR's advice. I had a Viewsonic monitor myself, and I DID shield the inside, put ferrites on the VGA input cable, put chokes, ferrites & capacitors on the AC input as well, and didn't even manage to reduce the radiated noise. I suspect it's coming from the CRT itself. You will most likely spend more money trying to fix that monitor than you would buying an already shielded one or a TFT LCD one. Personaly I like the LCD monitors (don't get a plasma screen monitor as some of them radiate worse than the viewsonic), but haven't been able to afford one yet. I'm using the Dell monitor that came with my computer, and whoever manufactures them for Dell did an excellent job of shielding this one as I don't have any noticeable radiation that I can find in any of the ham bands. There is a little garbage appearing around 12 MHz that I can attribute to the monitor, but even there it's attenuated enough that you wouldn't notice it unless the atmospheric noise was very low.
Jim - W0EB > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm > Sent: Monday, November 21, 2005 9:21 AM > To: Mark Baugh; Elecraft Reflector > Subject: RE: [Elecraft] Monitor Noise > > > Mark, > > The best solution that I can offer is to replace it with a > TFT (LCD) monitor. Takes up a lot less space on the > operating desk and does not generate so much trash in the RF > spectrum. I suffered from the same thing for a long time and > finally just bit the bullet and bought one - I have been very pleased. > > 73, > Don W3FPR > > > -----Original Message----- > > > > After the discussion on computer noise, I was reminded > > that I have a problem with noise generated by my > > Viewsonic crt monitor. I use my computer for logging, > > so it has to be on when I'm on the air. Does anyone > > have any ideas on how to reduce/eliminate this type of > > noise? I thought about making some kind of ground > > sheild inside the case of my monitor, but that might > > create a cooling problem. Ideas? > > > > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
