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We had a problem with our A3S on the mast 10' above the 50' tower top at =
our club station. When I opened up the feedline/barrel/balun interface =
(PL259-Barrel-PL259), the balun PL259 was completely trashed inside. I =
couldn't really tell if it was a dissimilar metal (I wasn't looking for =
that aspect) or water infiltration. I replaced the balun (coaxial =
cable) and still have the old one and it's PL259. I'll take a look at =
it again. The barrel was very clean, but I replaced it anyway.=20
73,
dale, kg5u
-----Original Message-----
From: Bob Perring <perring@texas.net>
To: Greg Gobleman <k9zm@frontiernet.net>; towertalk@contesting.com =
<towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Sunday, January 31, 1999 9:35 AM
Subject: Re: [TowerTalk] Corroded connectors !
=20
=20
I am experiencing a similar failure mode when using barrels in coax =
runs.
=20
Now, I just make sure to NOT use barrels (outside) in my =
installations, but I am at a loss to understand why these barrels seem =
to cause such a problem.
=20
My best guess is that the corrosion problem develops as the result =
of a dissimilar metal transaction (cathodic exchange), despite any of =
my attempts to completely wrap or protect the plugs and barrel from the =
elements.
=20
Others?
=20
N5RP
=20
C. Robert Perring
Consultant to Technology ATD3
12715 Westmere
Houston, Texas 77077
tele:(281) 493-5780
fax: (281) 493-5780
E-mail: mailto:perring@texas.net=20
Home Page: http://perring.home.texas.net
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<BODY bgColor=3D#ffffff>
<DIV><FONT color=3D#000000 size=3D2>We had a problem with our A3S on the =
mast 10'=20
above the 50' tower top at our club station. When I opened up the=20
feedline/barrel/balun interface (PL259-Barrel-PL259), the balun PL259 =
was=20
completely trashed inside. I couldn't really tell if it was a =
dissimilar=20
metal (I wasn't looking for that aspect) or water infiltration. I =
replaced=20
the balun (coaxial cable) and still have the old one and it's =
PL259. I'll=20
take a look at it again. The barrel was very clean, but I replaced =
it=20
anyway. </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>73,</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT><FONT size=3D2>dale, =
kg5u</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: =
5px">
<DIV><FONT face=3DArial size=3D2><B>-----Original =
Message-----</B><BR><B>From:=20
</B>Bob Perring <<A=20
=
href=3D"mailto:perring@texas.net";>perring@texas.net</A>><BR><B>To: =
</B>Greg=20
Gobleman <<A=20
href=3D"mailto:k9zm@frontiernet.net";>k9zm@frontiernet.net</A>>; =
<A=20
=
href=3D"mailto:towertalk@contesting.com";>towertalk@contesting.com</A> =
<<A=20
=
href=3D"mailto:towertalk@contesting.com";>towertalk@contesting.com</A>>=
To: <towertalk@contesting.com>
<BR><B>Date:=20
</B>Sunday, January 31, 1999 9:35 AM<BR><B>Subject: </B>Re: =
[TowerTalk]=20
Corroded connectors !<BR><BR></DIV></FONT><FONT size=3D3>I am =
experiencing a=20
similar failure mode when using barrels in coax runs.<BR><BR>Now, I =
just=20
make sure to NOT use barrels (outside) in my installations, but I am =
at a=20
loss to understand why these barrels seem to cause such a =
problem.<BR><BR>My=20
best guess is that the corrosion problem develops as the result =
of a=20
dissimilar metal transaction (cathodic exchange), despite any of my =
attempts=20
to completely wrap or protect the plugs and barrel from the=20
elements.<BR><BR>Others?<BR><BR>N5RP</FONT><BR>
<DIV>C. Robert Perring</DIV>
<DIV>Consultant to Technology ATD3</DIV>
<DIV>12715 Westmere</DIV>
<DIV>Houston, Texas 77077</DIV>
<DIV>tele:(281) 493-5780</DIV>
<DIV>fax: (281) 493-5780</DIV>
<DIV>E-mail: <A href=3D"mailto:perring@texas.net"; EUDORA =3D=20
AUTOURL>mailto:perring@texas.net</A> </DIV>
<DIV>Home Page: <A href=3D"http://perring.home.texas.net/"; =
EUDORA =3D=20
=
AUTOURL>http://perring.home.texas.net</A></DIV></BLOCKQUOTE></BODY></HTML=
>
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