TC tuning tools

To: tesla-at-pupman-dot-com
Subject: TC tuning tools
From: Marco Denicolai <marco-at-vistacom.fi> (by way of Terry Fritz <terryf-at-verinet-dot-com>)
Date: Tue, 22 Sep 1998 23:47:17 -0600
Approved: terryf-at-verinet-dot-com

At 04:56 22/09/98 -0600, you wrote:
>Original Poster: Greg Leyh <lod-at-pacbell-dot-net> 
>TC's became weird to me again after I witnessed 
>Lou Balint's excellent demonstration of magnifier 
>tuning techniques and node placement.  He had a
>rather clever array of neon bulbs arranged so the
>observer could see the field intensities in real
>time, while the drive frequency was altered.  
>It was really cool to see an _actual node_ ride
>up and down the side of the coil as the tuning
>was varied, or as a hand was brought near the top!

Having no oscilloscope to use, just relying on the spark
length to a grounded rod, I have troubles tuning at best
my TC. There is a wide zone in the primary hook-up connection (about 1.5 turn)
that gives almost same spark length. I also tried to run the
tuning procedure using different coupling (to possibly avoid the
double hill effect with too tide coupling) but I found no difference.

The method to arrange an array of fluorescent lamps around the TC
seems to me a good and cheap method to notice better/worse tuning,
but how those lamps were arranged?

Were they at increasing distance from the TC? What spacing between
each other? Were they in vertical or horizontal position?

________________________________________________________________________

 Marco Denicolai                   Vista Communication Instruments, Inc.
 Hardware Development Manager      www.vistacom.fi   

 marco-at-vistacom.fi                 Kaisaniemenkatu 13 A
 fax:    +358-9-622-5610           SF-00100 HELSINKI
 phone:  +358-9-622-623-15         Finland

   Remember, Murphy was an optimist! I am not...
________________________________________________________________________