Reg Edwards wrote:
Its weakest feature is the probe mechanism itself. Its electrical presence
is unpredictable. Incalculable. Uncertainty can only be minimised.

I remember making some measurements on half-inch 75 ohm coax at
Texas A&M by simply pushing the braid away from a place on the
inner insulation and drilling a small hole to the center conductor.
We used an RF VTVM probe. I remember seeing the effects of
standing voltage waves but I have no idea what the accuracy
was.
--
73, Cecil http://www.qsl.net/w5dxp



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