On Sat, 10 Jul 2004 18:30:40 -0500, Tom Ring
wrote:

Well, how would you suggest he troubleshoot it?

Hi Tom,

I've already addressed that, as has the manufacturer.

I would drop some extra C in to determine if that's what's needed. What
is it going to hurt? Otherwise all he has left, from what you have
suggested, is to complain to the manufacturer.

Just "add some extra C?" Think he could find a 20KV rated cap with
100A leads at Radio Shack? Do you and Reg seriously think that a one
loop inductor and simple cap have been so confusing to manufacture
that gum and bailing wire will fix it?

We may as well offer him to file down the inductor to raise the R to
accomplish the same thing. It doesn't take much, a very thin saw
cutting a notch could do it pretty quickly. With luck, it may even
self-heal welding the slot shut.

The manual's suggestion to squeeze the feed loop is beginning to look
better already.

If it needs more C to tune, it isn't for lack of plates or their mesh.
More likely it is the capacitor drive system.

At the least, he should determine what, if anything, makes a difference
before complaining.

That has already been offered. If anything, John should determine
that it isn't a razor thin null that is escaping his attempts to lower
SWR.

73's
Richard Clark, KB7QHC