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[TowerTalk] Corroded connectors !

To: <towertalk@contesting.com>
Subject: [TowerTalk] Corroded connectors !
From: kg5u@hal-pc.org (Dale L. Martin)
Date: Sun, 31 Jan 1999 12:01:37 -0600
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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.&nbsp; When I opened up the=20
feedline/barrel/balun interface (PL259-Barrel-PL259), the balun PL259 =
was=20
completely trashed inside.&nbsp; I couldn't really tell if it was a =
dissimilar=20
metal (I wasn't looking for that aspect) or water infiltration.&nbsp; I =
replaced=20
the balun (coaxial cable) and still have the old one and it's =
PL259.&nbsp; I'll=20
take a look at it again.&nbsp; The barrel was very clean, but I replaced =
it=20
anyway. </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</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>&nbsp;</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 &lt;<A=20
    =
href=3D"mailto:perring@texas.net";>perring@texas.net</A>&gt;<BR><B>To: =
</B>Greg=20
    Gobleman &lt;<A=20
    href=3D"mailto:k9zm@frontiernet.net";>k9zm@frontiernet.net</A>&gt;; =
<A=20
    =
href=3D"mailto:towertalk@contesting.com";>towertalk@contesting.com</A> =
&lt;<A=20
    =
href=3D"mailto:towertalk@contesting.com";>towertalk@contesting.com</A>&gt;=
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&nbsp; 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:&nbsp; <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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