Re: RG58U vs RG58A/U
Posted by
Brett Howard on
Mar 21, 2010; 7:31pm
URL: http://elecraft.85.s1.nabble.com/RG58U-vs-RG58A-U-tp4771678p4774219.html
Well that tells me that over a 50 foot run (which is the max of what
I'll have to do) I'm looking at a delta between the cables of a little
under a dB.
I don't have a ton of ends around and I've already slapped onto the
lesser cable so I'll probably just go with that for now. Later I plan
to get a hunk of RG-8 but thats for a date when I can get a bit more
height. (probably after I sell this house and move somewhere else).
I really liked the idea suggested by others to run the two cables to a
R50+j0 load and measure loss. Technically now that I think of it I
could make that measurement with only one connector on each length of
cable with my MFJ-259B. It can measure loss to an open on the far end.
Appreciate all the thoughts gentlemen and the data.
~Brett (KC7OTG)
On Sun, 2010-03-21 at 14:44 -0400, Guy Olinger K2AV wrote:
>
> The following loss figures might influence what you do. Figures are
> from Wireman's published reference book but can be found in numerous
> sources.
>
> Coax dielectric Loss for 100' @ 150 MHz Notes
>
> RG58U solid pe 5.1 dB solid center conductor
>
> RG58AU solid pe 6.8 dB stranded center conductor,
> 19 strands
>
>
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