Topband: Coax for Top-band beverage antenna

[Artek Manuals]

Kevin et all
(follow up to a post earlier this week)

I am in the process of building some RG6 BOG's ( where the "antenna" and 
the feed line are both RG6)  and happen have a brand new 500' role of 
Southwire RG6 type CM/CL . 18ga copper clad steel center conductor 100% 
Aluminum foil/60% aluminum braid

I measured the loss with a 75ohm load and 33ohm load (~2:1vswr) with the 
following results

75 ohm load 4.5db (.9db/100 feet)
33 ohm load 8db loss (1.6db/100 feet)

This is about as cheap as it gets at $40/500ft or $.08/foot. This was 
purchased at my local big box builder supply

Equipment used : HP E4433B generator and Boonton 92A RF Voltmeter

Dave
NR1DX


PS: so far the Bogs are working quite well but still tweaking, full 
report when I am done
PPS: if you want loss numbers for other frequencies (80 & 40) drop me a 
private email

On 9/19/2019 3:15 PM, Kevin Shea wrote:
> Dave,
>
> The run to the feedpoint of the beverage is about 600'  The beverage 
> antenna itself will be coax and that will be about 800'.
>
> Kevin, N9JKP
>
>
> On Thursday 19 September 2019, 10:25:04 CDT, Artek Manuals 
> <Manuals at ArtekManuals.com> wrote:
>
>
> Kevin
>
> How long a run we talking here?
>
> Dave
> NR1DX
>
> On 9/19/2019 11:17 AM, Kevin Shea via Topband wrote:
> > I have read that the skin effect at 2 MHz may be deeper than the 
> copper coating on a copper covered steel inner conductor of most RG6 
> cables.  Thus, as I plan for long cable runs back from my (to be 
> installed) Beverages I am thinking I need either solid copper, solid 
> aluminum,. or copper covered aluminum for my RG6 coax. So the question 
> is am I wrong in this understanding?
> > Also, does the shield matter?  It's not very thick so does a foil 
> and 60% aluminum shield do the job?  Or should I be looking at a foil 
> and 95 percent copper shield like the Belden 1694.
> > I know it may not be too material but I want to make an informed 
> decision.
> > Thanks! and
> > 73,
> > Kevin, N9JKP
>
> > _________________
> > Searchable Archives: http://www.contesting.com/_topband 
> <http://www.contesting.com/_topband >- Topband Reflector
>
> -- 
> Dave
> Manuals at ArtekManuals.com <mailto:Manuals at ArtekManuals.com>
> www.ArtekManuals.com
>
>
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-- 
Dave
Manuals at ArtekManuals.com
www.ArtekManuals.com