Gerald,
I'm not aware of any foam filled cables that can be pressurized.
Pressurized corrugated cable is normally of the air dielectric variety -
the Andrew HJ series being the most common but there have been many
other examples.
-Steve K8LX
On 9/7/2016 8:56 AM, TexasRF--- via TowerTalk wrote:
<snip>
Many commercial applications pressurize all of the cables even if they are
foam filled types to prevent the problem. You may have noticed many of the
Heliax type connectors have air fittings; that is why.
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