Streamer loading and tuning (fwd)

---------- Forwarded message ----------
Date: Wed, 15 Jul 1998 15:39:24 +0100
From: Vivian <V.C.Watts-at-btinternet-dot-com>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Streamer loading and tuning

Hi all,
    Recent correspondence has prompted me to ask a few questions.

Reading correspondence from John Couture he suggests raising the height of
the secondary affects "find the proper tuning point".  I have always
measured the resonance of my secondary with top load separately form the
primary.  Then tune the primary circuit (without the secondary).  Then I
have brought the two together.  I have never  tried re-tuning once together.
If the coupling can effect the tuning should I be tuning as a complete coil?

On a similar note.  If a sparking coil has streamers which correspondence is
suggesting has a significant effect on top load capacitance.  Would it be
better to de-tune the primary lower than the secondary such that when the
streamers are active they are in-tune?


Viv Watts UK.