TopBand: Coax use

[T. A. Russell]

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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