Tom,
If all the other suggestions mentioned do not solve your problem, consider
this.
I had some noise show up here at home that I first noticed on the A M
broadcast band. After some investigation I tracked it down to a P C's power
supply. That computer had been here for years and suddenly started this
problem. A trip to the computer parts store netted me a new power supply.
Less then 10 minutes later and $40 poorer, the problem was solved. Power
supplies are mounted with 4 screws and all the cabling are plug-in type
connections so the swap-out is a piece of cake. Unless you have some super
compact unusual computer, most power supplies are fairly standard.
Is this a mini tower type computer? If so, it should be a standard type ATX
style power supply.
There will be a power connection to your hard drive,
CD/DVD drive, and possibly 1 or 2 to the motherboard, that's all there is
to it.
I have built about 6 computers over the last 10 or so years.
You can do it.
Howard #3
----- Original Message -----
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, November 15, 2013 7:30 AM
Subject: Anoying Interference Issue
> Hi, all.
>
> As I think many of you know, I am currently in the process of switching to
> a
> Windows 7 PC as my main home computer. I will be using the PC for both
> professional and personal purposes here in my home office.
>
> My home office is also where I have my ham station set up, which does have
> its advantages if I need to take a little break and check out the bands
> every once in a while. (grin)
>
> Anyway, I have just noticed that when this new computer is running, it
> places all sorts of little birdies across the HF bands, particularly the
> higher HF bands like 10 and 15 meters.
>
> To me, this obviously means that the computer has a very poorly-designed
> switching power supply.
>
> My question is what might I be able to do to minimize this interference?
>
> I have thought of switching the computer to another circuit in the house,
> but that would involve running an extension cord into another room, which
> could be a bit of a pain.
>
> If there is a fortunate side to this dilemma, it is that I am not going to
> be using the PC for ham radio applications such as logging, rig control,
> and
> the like. Those functions are done via a separate Windows XP laptop that
> I
> have on my ham radio operating desk.
>
> Of course, the obvious low tech solution to this issue would simply be to
> turn off the main PC whenever I am operating on the HF bands, and I may
> have
> to resort to that for now.
>
> If, though, there is something else I might want to try, please let me
> know.
>
> Tom Behler: KB8TYJ
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