RG-58 has approximately 2 dB of loss per 100 ft at 28 MHz.
Loss decreases by the square root of frequency, i.e.,
by 1/2 for a 4:1 frequency change. This equates to
1 dB at 7 MHz, and approximately 0.5 dB at 1.8 MHz
for 100 ft of RG-58. Not a problem.
de Tom N4KG
............................
On Sun, 21 Sep 1997 11:52:21 -0600 Larry Menzel <lmenzel@millcomm.com>
writes:
>Topbanders,
>
>Well, I'm happy to report that two beverages went back up yesterday,
>with
>three more to follow...maybe two today. The horses are off the
>pasture
>now, soooo...beverages back up.
>
>Question: Last year I had the terminal point closer to my shack, so I
>used
>an old piece of RG8...seemed to work fine. This year I moved the
>antenna
>switch and bev terminus about 100 feet further from the shack. I'd
>like to
>use a bunch of RG58 that I have hanging in the shop.
>
>Will RG58 suffice for the run from the switch to the shack...about 150
>feet, or should I use a lower loss coax?
>
>Thanks in advance, and looking forward to the coming season of topband
>dxing.
>
>Larry N0XB
>Northfield, MN
>
> -
> ---
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>Submissions: topband@contesting.com
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>Problems: owner-topband@contesting.com
>
-
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