January 12th 09, 03:13 PM
posted to rec.radio.amateur.antenna
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external usenet poster
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First recorded activity by RadioBanter: Jun 2008
Posts: 1,183
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N power connector rating? [Hardline Connectors]
NoSPAM wrote:
"Art Unwin" wrote in message
...
"What I use on 7/8 hardline is a copper reducer with a barrel connecter
soldered into one end and then I screw the combination over the hard
line. Now you have an output from the hardline that can fit most things
. One time I filled the copper reducer with dielectric before I inserted
the barrel connecter but could see no difference using max power.
Certainly a lot cheaper than Andrews connectors and if the coax route is
not ideal it is easy and inexpensive to add flexible lengths at tight
corners, such as emerging from underground piping. Hardline gets
extremely rigid and the outer insulation is subject to cracking in the
winter time which is when I seem to have to work on things."
Just remember that the aluminum to copper galvanic couple promotes the
corrosion of the aluminum. Keep the contact areas as dry as possible if
you don't want problems. I have found that wrapping several layers of
tightly stretched vinyl electrical tape and then spraying the area with
clear KrylonŽ acrylic varnish does a reasonable job. But since water
vapor can diffuse through the tape, you will need to check the
connection periodically.
73, Dr. Barry L. Ornitz WA4VZQ
Use an elbow to get tight 90s.
http://www.eaa1000.av.org/technicl/c...n/galvanic.htm
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