I've run LDF Heliax direct-buried numerous times, no problems after 20+
years. You don't want splices, and you don't want the connectors buried. If
you are careful and don't damage the exterior coating, you will be fine. The
stuff is extremely rugged, not sure it's specifically rated for direct
burial but a lot of commercial 2-way shops have done just that over the
years. That's been my experience anyway...YMMV.
73
dan
k0dan
-----Original Message-----
From: Paul Christensen
Sent: May 13, 2014 08:46
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Buring Bury-Flex
I've never run Heliax and its variants in the ground. Are they rated this
way by the manufacturers? I'm looking at running either 1/2" or 5/8" foam
lines in the ground. I'm fine with direct burial as long as the cable is
rated for it.
Paul, W9AC
From: <john@kk9a.com>
To: <towertalk@contesting.com>
Sent: Tuesday, May 13, 2014 9:38 AM
Subject: Re: [TowerTalk] Buring Bury-Flex
I direct bury Andrew Heliax. The PVC coating is very tough and the solid
copper shield should not allow moisture ingress if the coating becomes
nicked. If you shop around you can purchase new LDF4 for a good price,
less than Bury-Flex plus the PVC tubing. It has significantly less loss
and installation will be easier. There is no worrying about watertight
glue joints or PVC drain holes. If the cable is in an area where you might
dig, you can put something over the top for protection.
John KK9A
To: "Tower Talk" <towertalk@contesting.com>
Subject: [TowerTalk] Buring Bury-Flex
From: "Larry Banks" <larryb.w1dyj@verizon.net>
Date: Fri, 09 May 2014 15:00:32 -0400
Hi all,
I am running Davis Bury-Flex out to a new 40M vertical in my back yard.
(Maine
coast.) As it is going across gravel walkways and near garden beds, and
will
not be that far below ground level, I am worried about it getting cut or
nicked
in the future from yard work, etc.
My plan is to use 1" sched 40 PVC conduit - the gray stuff - for protection.
(I will not be adding additional coax, wires, etc., ever, so this should
be big
enough.)
My Concern: the conduit will obviously become full of water - will freeze
cycles and the expansion of ice inside the conduit compress and therefore
damage the Bury-Flex in any way?
73 -- Larry -- W1DYJ
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