On the antenna end, go up with the coax. Then any water that gets in will
come out the same end, instead of in the shack. I friend of mine did have
puddle under his rig from water flowing out of 9913. No, he did not take a
lightning hit. I don't use 9913 outdoors. Also, I think the flexible 9913 is
not hollow.

Tam/WB2TT
"Dave Woolf" wrote in message
...

Just wonder what other's might do to keep moisture
from getting into the semi-hollow 9913 type low
loss coax. It would seem inevitiable with changes
in temperature and pressure that moist air would
eventually work its way into the coax and then
condense.

I had a fellow ham that took the precaution of
pressurizing this type of coax to maintain
positive pressure and keep out outside air.
Seemed like a lot of effort but maybe it is necessary.

I have tried to seal the ends of the coax with silicone
sealant but I am not really sure that this has been
effective in the long term.

What do others do? What has been your experience?

Dave - K8RSP
(to reply to me directly remove NOSPAM from above
address)