[Tfug] Yet another poser

[Bexley Hall]

--- Rich <r-lists at studiosprocket.com> wrote:

> On Sep 26, 2007, at 6:34 pm, Bexley Hall wrote:
> 
> > Hmmm... that doesn't sound right.  Usually you end
> up
> > with *unbearable* hum if one side of the telco
> line
> > is grounded.  <shrug>
> 
> Ever heard of radio? :-)

Sure!  But the telephone company grounds one end
of the circuit at the CO.  If you ground the line
(*assuming* you pick the right conductor!) at the
customer's location, you end up with an *unbearable*
ground loop.  Consider there may be miles of cable
between you and the CO.
 
> You only have one waggly bit of signal to pick up --
> the other is  
> ground. Depends how you modulate it, how you filter
> it.

Sure.  But phones aren't designed to remove *volts*
of noise!  :>


       
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