[Waverley ARS] Unsuspected RFI Source

[Adam Carmichael]

Many of you probably already knew this, but hopefully it is of some help 
to a few people trying to get rid of that interference.

About 6 months ago I bought an LCD flatscreen monitor instead of CRT 
(despite preferring CRT because of the faster refresh rates; but now I 
can't really tell :p). When I got licensed and plugged my radios in, I 
also thought it would have the added bonus of having minimal RF 
interference.

How wrong I was. As I type this email I am reading on my VX7R an S 
reading of between 5-8 from VK2ROT; with about half the other repeaters 
S > 9 and half strangely, nothing... When I turn the monitor off it 
immediately drops to 1-3 across the board, and sometimes nothing at all 
on the previously affected stations.

Lesson learned: The Dell LCDs are not low RFI despite the fact they 
aren't full of cathode rays hitting a phosphourescent screen!

(As an afterthought: it might be the backlight in the LCD that is 
causing it).

-- 
Adam Carmichael
p: +61 415 37 1990
w: http://carneeki.net
e: carneeki at carneeki.net
i: 2207644