Topband: Best coax for direct burial?

[Anthony Scandurra]

Jim,

Davis RF BuryFlex is the way to go.  It has a PE jacket, a stranded copper
center conductor, it's direct burial (just as the name implies), and it
handles direct sunlight exposure very well.

I have been using it for 15 years, and it all came from the same roll I
bought from The Wireman at the Shelby NC Hamfest.  It's a little more
expensive today, but I plan to buy another roll soon.

73, Tony K4QE


On Sun, Aug 25, 2013 at 11:25 AM, Jim Garland <4cx250b at miamioh.edu> wrote:

> My forthcoming 160m vertical requires about a 700 ft run of coax. I'd like
> to bury the coax over most of the run, but some of it will be elevated,
> with
> high UV exposure. (I'm at 7000 ft elevation and sun shines 330 days/yr.)
> The
> climate is very arid here (about 4-6 in rain/yr), so water ingress isn't a
> major consideration.
>
>
>
> I'd like an RG-213 type coax with a solid dielectric, rather than an
> LMR-400
> type, or anything with a foam dielectric. The losses aren't an issue, since
> this will be used exclusively on topband and 80m. I'm unclear about what
> "direct burial" coax means, especially with respect to the outer jacket. Is
> polyethelene to be preferred over PVC with respect to toughness and UV
> resistance?  Stranded center conductor is mildly preferred but not
> essential. Mostly what I'm looking for is long-term reliability. I'd
> appreciate advice and suggestions, and also any recommendations about
> suppliers (some of whom give very little technical info about their
> products
> and are rather cryptic about who actually makes the coax.)
>
> Tnx and 73,
>
> Jim W8ZR
>
> _________________
> Topband Reflector
>