RE: [TCML] Scope Issues

["Lau, Gary" <Gary.Lau@xxxxxx>]

Hi Greg,

Like Philip, I too don't use any kind of special pickup - just the probe in the vicinity of the operating coil.  You mention that your antenna was 15 ft away from the coil.  I suspect that may be the problem.  Just bring it closer, and don't bother with a special antenna.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of G Hunter
> Sent: Wednesday, May 06, 2009 8:58 PM
> To: tesla@xxxxxxxxxx
> Subject: [TCML] Scope Issues
> 
> 
> 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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