On 12 Aug 2003 18:02:19 GMT, (JDer8745) wrote:

He sed:

"The transmitter output impedance has no effect whatsoever on the line's SWR."

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THIS IS ABSOLUTELY CORRECT!

73 Jack

Hi Jack,

Hmm, the world of accurate measurement must be wrong then. :-)

It is correct that into a matched load, it makes little difference -
that is not the subject at hand, and as I have said, it has already
been demonstrated twice.

To this point I have seen no counter demonstrations, nor counter
proposals, nor counter argument (no, Jack, yours is not an argument),
nor conflicting bench data. What I have seen are sweeping statements
without any supporting evidence. Given the amateur preference for the
snuggly comfort of illusion, I suppose none of this will change. Not
that I care, it does provide me entertainment (right now in fact) when
astonished correspondents post their plight and are offered responses
of nostrums and head-bobbing. I would offer that it is a joke that
never grows tired - simply because so few would recognize they had a
problem in the first place. In fact, this second demonstration arose
through the naive investigation of a non-amateur. Too many amateurs
consider themselves above such bench activity and too sophisticated to
trod that path.

The flip side of the argument (and why it is so painfully ignored) is
that reveals that most rigs DO exhibit a Z of nearly 50 Ohms such that
this is rarely a problem. It also reveals a shortfall of bench
experience in amateur construction. There was a time when many more
suffered this because they built their own transmitter instead of
passing a credit card across the display case to a sales clerk.

73's
Richard Clark, KB7QHC