[Elecraft] [OT] LCD monitors <was> Tracking Local QRN

Don ehrlich at olypen.com
Sat Dec 9 23:17:17 EST 2006


My LCD monitor (now long out of production) was indeed a lot less noisy than 
the old CRT model.  My LCD screen came with a small switching 12 volt power 
supply, though, and it generated a lot of hash by itself.  I finally 
replaced the little switcher with a linear (non switching) power supply to 
cure that contribution to noise.  The only noise now coming from the monitor 
is from the video signal coming from the video wiring and there is nothing 
to be done about that but it occurs only here and there in the spectrum and 
is rarely a problem.

I would predict that most LCD monitors are far less noisy than the old CRTs 
but be prepared to deal with the broadband switcher noise from the cheap 
little power supplies that come with the new monitors.

Don K7FJ

> Mark J. Schreiner wrote:
>> The most noise I had and eliminated quite easily was my computer monitor 
>> which was replaced about 1 year ago with an LCD monitor, WOW, big 
>> difference!
>>
> I have been considering a switch to an LCD monitor, but since finances 
> will lead me to buying the cheapest thing I can find, I have hesitated. I 
> would like to hear any 'specific' models/manufactures pros and cons for 
> 19" LCD's other use.



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