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Re: ground problems


From: 	Geoff Schecht[SMTP:geoffs-at-onr-dot-com]
Sent: 	Tuesday, September 16, 1997 11:38 AM
To: 	Tesla List
Subject: 	Re: ground problems



> From: 	Bert Hickman[SMTP:bert.hickman-at-aquila-dot-com]
> Reply To: 	bert.hickman-at-aquila-dot-com
> Sent: 	Tuesday, September 16, 1997 8:12 AM
> To: 	Tesla List
> Subject: 	Re: ground problems
> 
> Tesla List wrote:
> > 
> > From:   Mad Coiler[SMTP:tesla_coiler-at-hotmail-dot-com]
> > Sent:   Monday, September 15, 1997 6:55 PM
> > To:     tesla-at-pupman-dot-com
> > Subject:        ground problems
> > 
> > I am back in Columbus for a while and have one problem. I am on the
> > second level in an apartment building. Does anyone have any suggestions
> > about how I can get a descent ground? I have been using the cold water
> > copper pipe to the sink but have been informed that it is a fire risk.
I
> > suppose I might have to take it to a friends house if that is possible.
> > So far I haven't had any noise complaints, but only because I havent
run
> > it past 8pm.
> > 
> > Mad Coiler
> 
> 
> Mad,
> 
> Because of the use of plastic plumbing in many areas, your ground may
> not really be a ground. To determine if it is, take an ohmmeter and
> carefully measure the resistance between the ground connection (the
> third prong on a nearby AC outlet) and your cold water copper pipe
> ground. If you get good continuity (say 20 ohms or less), then you
> should be OK. Another alternative ground is the ironwork of the building
> you're in if it happens to be an iron-concrete type structure, or as a
> last resort, the AC ground itself if you have a small coil.
> 
> -- Bert --
> 

Hello All:

I've used soldered-together sections of "chicken wire" as a form of radial
system (counterpoise) for my vertical ham antennas from time to time. It
works fairly well in that application and is quite cheap. Any
opinions/experience from other list members about how this might work with
a TC that needs a grounding system? It's an RF ground, though, not a safety
(green-wire, in the US) ground.

Geoff (NQ7A)