Re: [IRCA] Possible cable internet noise??

[Hawkins <ng0g@xxxxxxxxx>]

Martin et al,

I have an extensive in house computer network ie, firewall,wired router, 
2 switches, and a wireless router.  I have 11 computers (all linux 
except 2 OS-X Apple).  I get little or no interference from any of this.

I do get interference from my computer monitor occasionally.  I have a 
KVM switch (Keyboard, Video, Mouse switch) it allows me to switch one 
keyboard, monitor, and mouse between several computers.  I strongly 
suspect it is actually from the cable (which I have tried shielding) as 
I can make it go away by switching to a computer that is not displaying 
anything.

My biggest source of interference comes from a neighbors house about 3 
doors down.  Using my Sangean ATS909 I have tracked this down to 
something in a neighbors basement.  He has not been home much so I don't 
know what it is.  I suspect a cheap switching power supply as I can hear 
multiples of the interfering signal as I go up in frequency.

Steve

On 9/20/13 2:00 AM, Patrick Martin wrote:
> Tonight I took a portable out to the cable box in my neighbor's yard
> (now moved) and across the street where the main box is and ran the
> portable right next to the boxes and I did not detect any noise that I
> could tell. At least no wide band noise. I was on 600 kHz which is
> fairly clear frequency with no stations in the NW. The nearest is SASK
> or MT. Both are weak here. I did not check out the whole band, but
> nohing noted on 600. I get more TVI from my own TV in the house! Maybe I
> have nothing to worry about. Since Charter Cable has to run the cable
> around to the far side of the house to where the power ground is, they
> run is across the front of the yard and back behind the house, a run of
> about 80 feet. But it will be buried. Hopefully no issues. The TVI noise
> I get from homes with cable may be the TV set itself radiating. It may
> be another week or more before they will run the drop and then into the
> house. But at least I did not notice any noise out by the Charter boxes.
> I fiqure that is a good sign.
>
> Patrick
>
> Patrick Martin
> Seaside OR
> KGED QSL Manager
>
>
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--
Stephen Hawkins NG0G
ng0g@xxxxxxxxx
73 49 111 01001001
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