I agree LMR400 and LMR400UF are both _not_ direct-burial cable types. To be
"direct burial," technically, the construction should be flooded, and these
Times products are not.
But people can do whatever they wish!
We're all famous for, or guilty of, the "I've done this, and never had a
single problem!" philosophy.
WB2WIK/6
"If everything seems under control, you're just not going fast enough." -
Mario Andretti
> -----Original Message-----
> From: Larry [SMTP:lclarks@nc.rr.com]
> Sent: Wednesday, October 16, 2002 2:03 PM
> To: Jon Ogden; Bill Ogden; towertalk@contesting.com
> Subject: Re: [Towertalk] Coax recommendations
>
> I'm using LMR400UF and was informed by Steve Davis of Davis RF that it is
> not suitable for direct burial.
>
> They sell a cable called "BURY FLEX" that is very close to the LMR400UF
> and
> a good price.
>
> Larry WA2SRY
> Durham, NC
>
> ----- Original Message -----
> From: "Jon Ogden" <na9d@speakeasy.net>
> To: "Bill Ogden" <ogden@us.ibm.com>; <towertalk@contesting.com>
> Sent: Wednesday, October 16, 2002 3:06 PM
> Subject: Re: [Towertalk] Coax recommendations
>
>
> > on 10/16/02 8:45 AM, Bill Ogden at ogden@us.ibm.com wrote:
> >
> > > Thank you for the practical comments about coax choice. Is LMR400
> handled
> > > just like RG8 or RG213? Same connectors? Would it be a transparent
> > > change? How sensitive is it to sealing the ends? Burial? RG213
> seems
> > > very forgiving about handling and environment.
> >
> > LMR400 falls in to the RG8 size classification and so uses the same
> > connectors. No problem. No issue with sealing. It's a solid
> dielectric
> > unlike 9913. It is suitable for direct burial. No problem there. The
> only
> > issue that has been raised is that of kinking the dielectric. One guy
> on
> > the reflector is very worried about that and any kind of deformation.
> I've
> > used a lot of it and never had problems. As long as you don't go beyond
> the
> > bend radius of the cable and treat it carefully, it will work fine.
> >
> > LMR400 also handles a lot more power than RG-8 and has a lot less loss
> than
> > RG-213.
> >
> > It comes in 2 flavors - ultra flex and regular. The ultraflex has a
> > stranded center conductor and is very flexible (also check out Cable
> Experts
> > CXP1318FX as a low cost alternative). The regular has a solid center
> > conductor and is not as flexible. It does have better loss
> characteristics.
> > And it's flexible enough to use with a rotor. Oddly enough, I have the
> > solid stuff on the rotor and tower and the flexible stuff running
> through
> > the house to the shack!
> >
> > 73,
> >
> > Jon
> > NA9D
> >
> > -------------------------------------
> > Jon Ogden
> > NA9D (ex: KE9NA)
> >
> > Life Member: ARRL, NRA
> > Member: AMSAT, DXCC
> >
> > http://www.qsl.net/ke9na
> >
> > "A life lived in fear is a life half lived."
> >
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>
>
> _______________________________________________
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> See http://www.mscomputer.com
>
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