[Towertalk] Coax recommendations

[John von Gonten]

I am leaning towards using Direct Bury cable in a PVC conduit just to
have a secondary form of protection in case the conduit happens to have
a serious issue with water at some point.

On Wed, 2002-10-16 at 23:19, KC2TN wrote:
> Personally, I wouldn't direct bury anything if you have another option.
> 
> After 30 years in the telephone Outside Plant industry I've yet to see
> anyone come up with a cable that's impervious to water.
> 
> When PIC (Polyethylene Insulated Cable) was first introduced for direct
> burial in the late 1960's and since, I've since a dozen different types
> of direct bury cable makeup's marketed. Single sheath, double sheath, three
> different types of flooding compounds and so on. To this day these cables
> do not last very long. 
> 
> For whatever reason Mother Nature usually wins out.
> 
> So, if you can, keep it out of the ground!
> 
> I'm sure there are those in dry climates where water may not be a problem,
> and have buried coax for some time, but where you have a high water table
> or frequent rain, I'd consider all other options first.
> 
> 
> Just my opinion!
> 
> Joe
> 
> -----Original Message-----
> From: towertalk-admin@contesting.com
> [mailto:towertalk-admin@contesting.com]On Behalf Of Eje Gustafsson
> Sent: Wednesday, October 16, 2002 11:58 PM
> To: towertalk-admin@contesting.com; John von Gonten
> Cc: TowerTalk
> Subject: Re: [Towertalk] Coax recommendations
> 
> 
> Hello John,
> 
> LMR-400DB is direct burial hence DB (Direct Burial).
> In the LMR category you have besides the "standard" cable the
> following options.
> FR - fire retardant for installation in vertical building raisers
> LLPL - low loss plenum cable for use in any in building aps including
> air handling plenums and spaces where maximum fire retarandcy and
> minimum smoke generation are required.
> DB - water tight cables with an inert flooding for direct burial
> UF - ultraflex stranded center conductor cables with flexble outer
> jacket
> 
> All of this is covered in Times Microwaves discovery document.
> 
> - Eje "Aya"
> 
> JvG> Texastowers sells coax tag LMR-400DB, and I quote the site for this "
> JvG> LMR-400 with a special sealing compound between the shield and outer
> JvG> jacket for direct burial." it is around 75 cents a foot listed on the
> JvG> site. Per Times Microwave site it has a 1" turn radius, .405" diamater.
> JvG> On Wed, 2002-10-16 at 18:55, 
> 
> 
> JvG> Jon Ogden wrote:
> >> Perhaps not.  They do have a direct burial version.
> >> 
> >> And the Cable Experts CXP1318FX IS indeed a direct burial cable.
> >> 
> >> 73,
> >> 
> >> Jon
> >> NA9D
> >> 
> >> on 10/16/02 4:03 PM, Larry at lclarks@nc.rr.com wrote:
> >> 
> >> > 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
> >> 
> >> 
> >> -------------------------------------
> >> 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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> _______________________________________________
> AN Wireless Self Supporting Towers at discounted prices, 
> See http://www.mscomputer.com 
> 
> Wireless Weather Stations now $349.95. Call Toll Free, 
> 888-333-9041 for additional information.
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-- 
73

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