[Elecraft] Coax Test Question

Tue Jun 10 19:00:01 2003

Fran, hams have been doing this for decades now. Quite a good and reliable
method you "invented." Congratulations!

One advantage is that the absolute accuracy of the meter is not too
important since it is the difference between two readings - hopefully
reasonably close to one another - that is the information.

And that difference in two readings *is* the actual loss.

73/72, George
Amateur Radio W5YR -  the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13QE
"In the 57th year and it just keeps getting better!"
<mailto:[email protected]>

----- Original Message -----
From: "Francis Belliveau" <[email protected]>
To: <[email protected]>
Sent: Tuesday, June 10, 2003 5:27 PM
Subject: [Elecraft] Coax Test Question

> With the question about RG58 I thought up a testing idea to help determine
> the quality of cox (or loss).
>
> Keep in mind the intent is to get a relative idea, not to measure actual
> losses.
>
> Would it make sense to place a dummy load at the back of the rig and
measure
> say the ac voltage or possibly power being delivered at the load, then
place
> the same load at the end of a piece of coax and make the same measurement?
>
> Even though the measurement method might be suspect, the measurement
> difference should be a reasonable indicator of signal loss.  Is there any
> value in this type of measurement?
>
> I was thinking that it would be a good way to judge the usefulness of used
> coax donated to the club or pulled from the club's locker for field day
use
> every year.  We always test to make sure a signal gets through but don't
run
> any kind of loss test.
>
> Fran
>
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