At 01:11 AM 11/18/2004, Don KA9QJG wrote:
>That was such a good explanintion about tires , I recall seeing fittings on
>Large coax at the Police Communications Center and I ask the radio Man what
>it was for and He just said it was Nitrogen. and I was just a Police Sgt and
>a Ham and would not understand , Nice Guy Yea Right So what was it really
>for ?
Dry nitrogen at low pressure inside the feed line prevents accumulation of
condensation from the moisture in the atmosphere. The smallest leak will
result in nitrogen loss instead of moist air invasion. In many locations
small nitrogen separation units (from medical suppliers) are used instead
of tanks of nitrogen to provide the small amounts of nitrogen needed to
maintain the feedline after the initial purge. 73, Tony W4ZT
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
