Having just completed some routine maintenance on my remote Rx array, I
find that the buried coax runs have started to degrade quite badly. What
appears to happen is that moisture enters via a tiny nick, travels along
the cable via capillary action, and gradually eats away the braid. One
section measured 30 ohms over a 10 ft length.
I therefore need to replace the cable runs. Cost constraints will limit me
to the lower end of the market, and availability is also an issue. I have
access to Belden 1189A and 9275. Does anyone have any experience as to how
these two stand up when buried? I'm not really too concerned about a
marginal degradation (this is only 2 MHz after all) but I would like to
avoid total corrosion of the braid if I can.
Any other ideas?
I don't have access to supplies of used solid CATV cable like you guys in
the US.
73, Greg,
ZL3IX
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