On Sun, 6 Jun 2010 15:21:59 -0700 (PDT), Wimpie
wrote:

Try the following experiment:

-sigh-

Hi Wimpie,

This is not what I asked for. You said what the source was NOT, but
you cannot say what the source IS.

The source is not a bipedal reptile. The source is not an elongated
diphthong. The source is not the resurrection of a deity (some may
argue that more than I would care to follow). The source is not....

There are many ways to say what the source is NOT, and that will never
inform us about the source. I see many draw deuces to this question
and try to convince everyone that the card is a pair of winning aces.

Now make some mismatch (for example VSWR=2 at different phase) and
read the forward power. Did it change? If so, the output impedance is
no (longer) 50 Ohms.

What IS it now? If you could measure it once, you should be able to
tell us what it is this time too. I did this for years to methods set
by the National Bureau of Standards. You have drawn a deuce, not two
aces.

Measuring method used: change in resistive load, from voltage change
you can calculate the current change, hence the output impedance. One
note, except two, all where solid state.

Yes, that is called a load pull, but you offer no data - another
deuce. I have done a lot of load pulls.

All high efficiency designs (class E, D) that I did have output
impedance far from the expected load impedance. With "far" I mean
factor 2 or factor 0.5. I did not measure that (as it is not
important in virtually all cases), but know it from the overload
simulation/measurement and I did the design myself.

You didn't measure it, but you can state the value - interesting state
of guessing. So, what did the simulation/non-measurement give you as
a value? What IS the value? Another deuce.

The reason for not being 50 Ohms

Reasons abound. BP is giving us reasons why the Gulf Coast shouldn't
worry. Data has proven that reasons don't work and neither does their
well. That is a Joker draw.

High efficiency CW amplifiers

The TS830S is not such an animal. Another Deuce.

If you can drop me a link to the discussion of the TS830s, I would
appreciate that.

Google "Plate Resistance" in this group.

73's
Richard Clark, KB7QHC