[RFI] LCD Monitor Interference

Pete Smith n4zr at contesting.com
Mon Sep 6 18:06:48 EDT 2004


Very interesting -- my generic 15" LCD monitor is completely quiet at HF, 
so far as I can tell, but today, I was listening to FM radio on a little 
clock radio.  We are in a fringe area, so the signal wasn't very strong, 
but it was full quieting.

When I connected the signal cable to the monitor, semi-white-noise 
interference could be heard on the radio.  Power down the monitor or shut 
down the computer, and the noise goes away, so I presume it is related to 
the minotor itself, rather than to the power supply.

This really isn't a problem for me, since I don't operate VHF, but I 
thought others might want to know.  The monitor is a LiquidVideo, sold by 
Circuit City stores.

73, Pete N4ZR
The World HF Contest Station Database
was updated on August 2, 2004
2753 contest stations at
www.pvrc.org/WCSD/WCSDsearch.htm  



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