On Mon, 26 Dec 2005 13:43:05 -0800, dansawyeror
wrote:

I have a section of air core Beldin coax, with the center feed separated by a
single wind of plastic insulator. The section is about 65 meters long. I added
enough RG58 to the feed end to get a full wave length. I then measured the
impedance using aa Autek analyzer. It read 30 Ohms.

The coaxpair program predicts for coax with a loss of about 10 db per km an
impedance of about 11.5 Ohms. The cable should be better then this.

Is this difference leaky or bad coax? Is it reasonable to assume water in the
cable? If it is water is there a practical way to get it out?

Thanks - Dan

Dan, you are a master of asking questions with partial / unreliable
information... and you have done it again!

Doesn't the Belden cable have a legible type marking?

How much RG58 did you add? (Why?)

What frequency did you make the measurement?

Was it 30+j0?

What was the objective of the measurement? If it was to determine
cable loss, does the Autek book give you a procedure for doing that?

Owen
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