[HCARC] Computer Interferance of 2 meter Rig/ Trivia Question

[Bill Tynan]

Gale:

Most computers are notoriously dirty. My light mouse puts a big signal on 
abt 144.200, the exact frequency depends the on temperature. My new flat 
screen monitor puts out all kinds of junk. Fortunately, the Dell that I have 
running the Flex 5000 radio is fairly quiet, although I do have some suprs, 
particularly on 2 meters that could be coming from it.

That's the age we live in.

73,

Bill, W3XO/5
----- Original Message ----- 
From: <galeheise at windstream.net>
To: "HCARC Reflector" <HCARC at mailman.qth.net>
Sent: Sunday, October 07, 2012 5:16 PM
Subject: [HCARC] Computer Interferance of 2 meter Rig/ Trivia Question


> To All-
>
>  Just curious if anyone knows why working on a laptop computer about 5 
> feet from my 2 meter receiving antenna, causes the squelch to open on a 
> two meter rig.  It appears to happen when I refresh a webpage.  When the 
> squelch is open, moving the computer screen pointer with the touch pad 
> causes a corresponding noise in the rig audio.  After a time of no 
> computer activity the squelch closes.
>
>  I think the router operates in the GHz range so I’m not sure why the 
> squelch is opening.  The computer processor speed is 2.3 GHz which is also 
> quite high.  I’m wondering if it has to do with the video display and the 
> speed at which it runs.  To open the squelch I would think something in 
> the computer is running around 150 MHz or some lower fundamental frequency 
> causing the interference to be a harmonic but I don’t know what it is.  If 
> anyone has a clue I’d be curious to know the reason.
>
>  Anyway, while I was composing this email I received an email alert and it 
> caused the squelch to open as well.
>
> Gale
> KM4DR
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