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Re: [TCML] Scope Issues

Greg,

I'm not sure about your antenna, that sounds weird...  When I scope out my
TCs I don't use a fancy antenna or anything like that.  I just put the probe
a few feet out of spark range and turn the scope to about 1V/Div  I'm able
to pick up the signal just fine, this works with my DRSSTC, and my VTTC.  I
can't really run a SGTC in the apartment, but I don't see how that'd be any
different.  Maybe your scope probe is very well shielded?  The probe I use
is a piece of junk (that happens to be falling apart :( ).

-Phillip

On Wed, May 6, 2009 at 19:57, G Hunter <dogbrain_39560@xxxxxxxxx> wrote:

>
> I tried to observe my SGTC quench on my o'scope tonight.  No dice.  This is
> the first time I've tried it.  I set up a simple horizontal dipole about
> 15ft from the 1KW, NST-based coil.  I used two 18" wire elements across a
> 47ohm resistor.  I set up the scope for a good-looking 200kHz sine wave from
> my sig gen, then plugged in the dipole to CH1 and went for it.  The scope
> displayed zip, even at 5mV/div.  I tried vertical polarization too.  No
> help.  I removed the resistor.  The scope now became sensitive to 60Hz noise
> and showed me a fuzzy trace.  Good!  Still no help.  The snarling TC across
> the room inspired not even a quiver from the mocking trace.  I'm stumped.
>  The vacuum cleaner motor on my sucker gap causes plenty of 60Hz hash on the
> scope, put the screaming coil causes no change in the display.  Were I a
> gambler, I would've bet the TC RF signal would be detectable from 10s of
> yards away.  What am I doing wrong?  Should I simply move the antenna
>  closer to the coil?  I don't have enough coax to do that at the moment,
> but I can get some.
>
> Cheers,
>
> Greg
>
>
>
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