I currently have 2 100' runs of LDF4-50 direct buried about 2-3 inches below
the ground and have never had an issue in 6+yrs. I even direct buried 2 heavy
duty control cables for the rotor and switch box. No problems whatsoever from
the ground heaving or critters.
Jim
N9WW
James Chaggaris
PowerOne Corp./PowerOne Environmental
1020 Cedar Avenue
Suite 203
St. Charles, IL 60174
Phn: (630) 443-6500
Fax: (630) 443-6505
Cell: (630) 669-2241
-----Original Message-----
From: john@kk9a.com
Sent: Sunday, April 3, 2011 9:32am
To: TOWERTALK@contesting.com
Cc: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
Subject: Re: [TowerTalk] burying hardline
I have never found LDF4 to be fragile at all, it's certainly tougher than
RG213 or LMR400. I really don't think it would crush underground, even if
buried relatively shallow.
John KK9A
To: towertalk@contesting.com
Subject: Re: [TowerTalk] burying hardline
From: K8RI on TT <k8ri-on-towertalk@tm.net>
Date: Sun, 03 Apr 2011 03:08:35 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 4/3/2011 1:24 AM, Mark, K5ER wrote:
I've found LDF4-50 (1/2" Heliax) to be a bit on the fragile side and
easily crushed. Were it me, and it's not, I'd put all feedlines in PVC
conduit. The reason is that yards can at times get soft and if your
tires sink in as you cross the feedlines it can be a mess. To me the PVC
is cheap insurance. I'd run the control lines either under the conduit,
or in their own conduit. OTOH although it's not good practice I do have
some control lines in the same conduit with the feed lines. I use lower
loss LMR-600 which has a smaller minimum bend radius and is much more
crush/kink resistant than LDF4-50
73
Roger (K8RI)
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