Hi Steve;

You may have inadvertently created a grounding loop.

73 De Anthony W2AJV
[log in to unmask]
ECHOLINK NODE NUMBER: 74389

  ----- Original Message ----- 
  From: Steve Dresser 
  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 
  ground.  On the other hand, I use three grounding rods, and I still have the 
  problem.

  Steve

  ----- Original Message ----- 
  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. 
  > 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 
  > 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 
  > 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 
  > set
  > of headphones in my case. The sighted hams just shut them off and leave it
  > that way.
  > ----- Original Message ----- 
  > 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.
  >
  >
  >