Steve:
Well, the main PC is a good 10 feet or so from the ham operating desk, so
the needed cable might be a bit too long.
Nevertheless, it might be worth a try, so long as the grounding cable isn't
resonant somewhere. (grin)
Tom Behler: KB8TYJ
----- Original Message -----
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, November 15, 2013 9:33 AM
Subject: Re: Anoying Interference Issue
> Tom,
>
> One other thought: I have 2 pc's in the shack and one of them puts a
> small amount of noise on the bands. I found that grounding the case
> of the pc to the station's ground solved it. Both computers are within
> 3 feet of the station ground, so it may not work for you if the work
> area and work pc are across the room.
>
> I just loosened one of the 4 screws holding the power supply in the pc
> and slipped a piece of hook up wire under it and ran it to the ground
> lug.
>
> 73, Steve KW3A
>
> On 11/15/2013 8:44 AM, Steve Forst wrote:
>> Tom,
>>
>> I would probably try unplugging everything possible from the pc and see
>> if the noise goes away. If you find the culprit, put ferrites on it.
>>
>> I had a keyboard that was causing problems and while ferrites killed 90
>> percent of it, I went to a $20 wireless keyboard and never looked back.
>>
>> BTW, I saw your log was received at the PAQSO site. I'll give you a
>> head's up when the preliminary scores are posted.
>>
>>
>> 73, Steve KW3A
>> On 11/15/2013 8:30 AM, Tom Behler wrote:
>>> 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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