[RFI] s7-s9 noise

[n0tt1@juno.com]

I took a look at the telco ground in my home...found that the
installer (a "real" telco installer before the telco rip-a-part)
had wrapped several turns of excess ground wire around a copper cold
water pipe and THEN made the ground connection.  With the
extra inductance it was unlikely to dump energy fast enough....
problem now corrected!

Charlie, N0TT

On Tue, 14 Jan 2003 9:10:17 -0800 "Cortland Richmond"
<ka5s@earthlink.net> writes:
> I spent five years in telecom EMC design and testing recently; that
> "ground" is merely a return path for induced currents.   House 
> protectors
> need a good LOCAL ground. How good? Using the GR-1089 surge waveform 
> for an
> example, it should be able to sink transients with rise time of a
> microsecond. Protectors have to dump energy _somewhere_. 
> 
> 
> Cortland
> 
> 
> > [Original Message]
> > From: EDWARDS, EDDIE J <eedwards@oppd.com>
> >
> > It may be code but it's rarely been done that way over the years.  
> 
> > 
> > -----Original Message-----
> > From: Bill Turner
> > On Mon, 13 Jan 2003 12:57:34 -0800, WOODS, ERIC D (PB) wrote:
> > 
> > >The power system ground and the telephone protector ground must 
> be
> > bonded
> > >together.  That's code.
> 
> 
> 
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> 
> 

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