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From: "Michael A. Terrell"
Subject: Re: Quickie Thermal Probe
Date: Sat, 14 Dec 2002 22:20:40 -0500
Organization: Have you seen my bench? No, really! Where is it?
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Mike Monett wrote:
> Michael A. Terrell wrote:
> > Did you ever have to drive a ground rod through permafrost? Heat it
> > wit an acetylene torch, and drive it a few inches, pull it back out, and
> > repeat, all day long till you finally pierce the permafrost. If you
> > tried to just drive it in, it would just bend.
> > Michael A. Terrell
> > Central Florida
> The last house I stayed in was supplied with well water. Two houses
> shared the same well.
> The building code requires the main AC power neutral be connected to the
> water main. This was done per requirement.
> Unfortunately, the water main coming from the well was plastic pipe.
> Neutral was connected to nothing. And it passed code.
> But Hey, if it works in Ottawa, it should handle your 2 MW transmitter up
> in Alaska just fine:)
That one wasn't 2MW. The AM was 250 watts, and the TV was 750 watts.
We needed better grounding to eliminate RF on all the internal wiring.
We had more AM RF on the shields of the video cable, than we had video
on the center conductor. Six of the seven phone lines picked up the
radio louder than the person on the other end of the phone line. When I
asked how long they had had the problem, they shrugged and said, "About
20 years. Why?" I also pulled out over 1.5 miles of old audio and video
cable before I got rid of all the stray RF .
Michael A. Terrell
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