[Elecraft] Good quality coax

Fri Jun 13 22:55:01 2003

Martin, I can't disagree with your measurements, but I think that you would
find RG-8X to be a better performer and investment.

If you are planning to tune that 40-meter antenna system to operate on the
other bands you mentioned, I fear you will be sadly disappointed with the
additional line loss that the high SWR on some bands will cause. For that
application, nothing beats ladderline and a tuner.

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: <[email protected]>
To: <[email protected]>
Sent: Friday, June 13, 2003 4:15 AM
Subject: [Elecraft] Good quality coax

> Hi Guys, took your advice and have tested 50m of my RG58/U coax.
>
> With 5W input and terminating with a 50ohm resistive load, approx. output
> figures are (using pretty rough and ready wattmeter reading)
>
> 7megs       3.9W  -0.022db/m  (0.037 in published data)
> 10megs      3.4W  -0.034db/m  (0.045 in published data)
> 14megs      3.2W  -0.039db/m  (0.054 in published data)
> 21megs      3.9W  -0.06db/m   (0.067 in published data)
>
> As you guys pointed out these are matched losses, but they don't look bad
> to me. With a 40m dipole and using 100 feet total run I should have approx
> -0.66db loss in the feeder ie 4.3W to the antenna. So I'll go for it.
>
> Thanks for the advice folks. Hope to get on the air for the first time
next
> week when I get the dipole up.
>
> Martin
> M0KWV
> K1/K1-4 #1534
>
>
>
>
> Why not take a look at our Web site?
> http://www.simoncarves.com
>
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