On Wed, 12 Oct 2005 05:36:38 GMT, Cecil Moore wrote:

Owen Duffy wrote:
XMTR -- 2m of RG58 -- Bird43 -- 1.2m of RG213 Bird43 -- 20m RG6 (75 ohms) -- antenna.

I don't have any argument with your results. Try this instead.

XMTR -- 2m of RG58 -- Bird43 -- 1.2m of RG6 Bird 43 -- 20m RG6 -- antenna


I won't waste the time, I can predict that they will most likely be
different. Transmission line theory tells me that the Z in the region
of each Bird will be different, and that will probably result in a
different indicated VSWR.

It is a sidetrack, just noise.

The measurements I reported were identical, although one Bird was
surrounded by 50 ohm line, and the other had 75 ohm line on one side
of it. The 75 ohm line did not cause a measureable difference in meter
readings in that simple trial.

Owen
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