It is a pretty dry climate in Denver isn't it?
With more humid areas, that contain higher amounts of ground moisture, the
outer layer of coax could break down more quickly.  Also, depending how deep
it is barried, UV could affect it, as well as levels of acidity in the
ground.
You will get a good couple years out of it in any case no matter what you
put down.
73
Colin, V A6BKX
----- Original Message ----- 
From: "Phil Scovell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 01, 2007 8:32 PM
Subject: Re: coax


> I bured a total of 600 feet of coax covering 70 feet to the base of my
tower
> that fed multiple antennas.  I used everything, back in those days, to the
> cheep and poor radio shack coax to pretty good coax.  It last literally
for
> a good 15 years and I never experienced any leakage of any kind.  Putting
> tubing down is ok but one problem is moisture build up inside the tubing
so
> I never bothered with the underground tubing.  We literally have no frost
> line to speak of here in Denver so I don't know if coax freezing and
thawing
> would effect it or not.
>
> Phil.
> K0NX
>
>
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