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Subject:
From:
Steve Dresser <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Wed, 6 Jun 2007 11:29:47 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (109 lines)
Anthony,

I'm sure that's possible, but I trust an earth ground more than I trust 
grounding to a cold water pipe.  How can I find out, and how do I get rid of 
a ground loop if there is one?

Steve

----- Original Message ----- 
From: "Anthony Vece" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, June 05, 2007 22:27
Subject: Re: RFI problem.


> Hi Steve;
>
> You may have inadvertently created a grounding loop.
>
> 73 De Anthony W2AJV
> [log in to unmask]
> ECHOLINK NODE NUMBER: 74389
>
>  ----- Original Message -----=20
>  From: Steve Dresser=20
>  To: [log in to unmask]
>  Sent: Tuesday, June 05, 2007 10:13 PM
>  Subject: Re: [BLIND-HAMS] RFI problem.
>
>
>  John,
>
>  You make a good point that a cold water ground isn't necessarily a =
> real=20
>  ground.  On the other hand, I use three grounding rods, and I still =
> have the=20
>  problem.
>
>  Steve
>
>  ----- Original Message -----=20
>  From: "John Miller" <[log in to unmask]>
>  To: <[log in to unmask]>
>  Sent: Tuesday, June 05, 2007 11:40
>  Subject: Re: RFI problem.
>
>
>  > From my experience, some computer speakers, you're not going to fix =
> it.=20
>  > The
>  > amplification in those is so cheap and garbage and unfiltered or =
> anything,
>  > it's just something you'll have to deal with more than likely. =
> Grounding=20
>  > to
>  > a cold water pipe may not help either though as most often if you do =
> it
>  > after the meter, supposedly the meter can isolate you from that =
> actually
>  > grounding though I don't always trust that, but worse than that, a =
> lot of
>  > times either the electrical can be grounded there which should make =
> RFI
>  > issues worse and when I was new and starting out, my water pipes =
> acted as
>  > part of the antenna when I did that. It never showed up on the SWR =
> or
>  > anything, but it caused a lot more RFI than it was supposed to fix =
> and my
>  > electrical is grounded separate from the water pipe because I have a =
> well
>  > and most of the line from the well to the tank in the cellar is PVC =
> anyway
>  > though I didn't know that at the time.
>  > Short version is though, half the hams I know, myself included go =
> through
>  > computer speakers in some way, shape or form and there's really =
> nothing=20
>  > most
>  > of us can do about it, a lot of us around here have tried everything =
> there
>  > is to tru and nothing helped short of just turning them off and =
> using a=20
>  > set
>  > of headphones in my case. The sighted hams just shut them off and =
> leave it
>  > that way.
>  > ----- Original Message -----=20
>  > From: "Richard French" <[log in to unmask]>
>  > To: <[log in to unmask]>
>  > Sent: Tuesday, June 05, 2007 11:26 AM
>  > Subject: RFI problem.
>  >
>  >
>  >> Hi list.
>  >> I grounded all my equipment to a cold water pipe, but I still come =
> across
>  >> my
>  >> computer speakers.
>  >> It's the only thing in the house I ever had RFI problems with.
>  >> Any suggestions would be greatly appreciated.
>  >> Thanks in advance, and 73.
>  >
>  >
>  >
>
>
> 

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