Re: RG8 Co-ax that can be buried?


 

Thanks Art, et al
May I ask what you guys are referring to as "compression fittings"?
Crimped?
I have a ton of RG-213-U, double shielded coax here already in long lengths, and some soft LMR-400. There's a stiff LMR-400 and a softer LMR-400.
I guess I need to spend time researching those.
I do know this: I want to make as continuous a run as possible from the shack to the antenna's. Inserting a splice with a barrel connector is loss.
It's so easy to lose a db and so difficult to gain a db.
The only panacea I can come up with is a continuous run.
Milt.
N6MG
070-650

----- Original Message -----
From: "Arthur Peters" <k0acp@...>
To: <070@...>
Sent: Friday, November 09, 2012 7:25 AM
Subject: Re: [070] RG8 Co-ax that can be buried?


For what it's worth, I too concur with the over-engineering - perhaps it
is just the latent EE in my trying to escape ...

I have used LMR400 DB inside a 4" pvc conduit, I have both installed
the runs in the conduit as I built it and I've used nylon drawcord. BTW
that new silicon survival tape makes a great way of temporarily "bonding"
the cord to the coax.

For me, I use Times compression UHF connectors -- available from Tessco.

This is a tad more expensive, but i've never had failure -- aside from a mole/
chipmunk that broke into the buried conduit and chewed the coax -- I could
tell the little rascal by his perm perm ... hi hi

Good luck Milt & please let us know how the project turns out.

73,

Art
070# 1140
LONP # 164
K0ACP@...

On Nov 8, 2012, at 11:38 PM, Jerry wrote:

RG-8/u or RG8X ??? 20 ft with no bends is easy, but add a couple 90 degree bends and double the distance ... it's a whole ball game !

Been pulling lots of big cables through conduit for many years. Coax can present different problems especially if one has to pull connectors from a pre-made coax. Lots of years of working n tower/antenna projects everything from 50 ft. to 190 ft. . One thing I've learned is to always over-engineer things and to be prepared for unexpected.

Just saying that every situation is different and sometimes what looks easy, isn't.

Jerry N9AVY

--- On Thu, 11/8/12, Robert Johnstone <shopr3@...> wrote:

From: Robert Johnstone <shopr3@...>
Subject: Re: [070] RG8 Co-ax that can be buried?
To: "070@..." <070@...>
Date: Thursday, November 8, 2012, 9:43 PM



I pushed rg8 through 1.5" conduit 20ft with 2 fingers, but then I left it elevated to clear the mower along a wood fence. Would not recommend for the world above 50. but fine for HF.

________________________________
From: Lee A. Ratcliff <lratcliff@...>
To: 070@...
Sent: Thursday, November 8, 2012 6:53 PM
Subject: Re: [070] RG8 Co-ax that can be buried?
I would recommend the Conduit. Go at least twice as big as you think you
need. when you put it in, put in runs of good nylon sting from one end of
the conduit to the other, and just leave them there. As long as they don�t
get tangled, you can pull more runs through later on. Much easier than
digging a trench each time you want to add a run of coax.
Lee
KC4ART
-----Original Message-----
From: w6qe.milt
Sent: Thursday, November 08, 2012 10:08 AM
To: 070@...
Subject: [070] RG8 Co-ax that can be buried?
Guys/Gals,
A bit of technical help please?
Does anyone know of a quality RG8 co-ax that can be buried? I have about a
30' run that goes to my tower. It either has to be buried 4" to 6" under the
lawn, or sleved in 4" pvc pipe with weather heads on each end.
The labor is a big difference for me. (And my gardener)
Looking down the road a bit, it's a huge hassle to do the pvc pipe since the
addition of antenna's to my tower would require a 'fish tape' or strong cord
in the tubing to pull additional co-ax runs through.
Experienced help pls?
Milt.
N6MG
070-650
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