[Antennas] Penetrox, Noalox, Alumatrox

2002年8月30日 00:10:13 -0400

This has been a great thread that affects everyone with outdoor (and even
attic) antennas. Many thanks to all the very knowledgeable contributors..
--------
I've always found copper and steel to get along fairly well.... at least as
compared to aluminum and steel which fight like cats & dogs even in a dry
desert...
I've used copper pipe straps on aluminum elements for short term exposures
OK. Qth is New England (high humidity) and about 70 miles from the nearest
body of salt water.
Our winter qth in tropic climes is another story. There, we're right on the
ocean and keeping outdoor connections clean and corrosion free requires
sealing them indoors in a dry air-conditioned room AND a fair amount of
annual maintenance. Bare coax soldered to a dipole's wires doesn't seem to
stand a chance without virtual airtight sealing..
Of course almost nothing gets along with even itself in a salt water
environment. Even 'stainless' (and there are a few grades of it) does show
a bit of corrosion/rust after salt water, and even salt air, exposure. I've
always been lead to believe that the better grades of stainless steel are
'very rust resistant' and not really 'rust-proof'.
Home wiring is usually copper connected with steel screws. Even my outside
outlets and barn outlets & fixtures show little if any signs of corrosion at
the wiring points after many, many years... This may be due to the fact that
the screws are plated (with ??)
73
Frank
 ._._.
----- Original Message -----
From: "Eric Lemmon" <[email protected]>
To: "Tom" <[email protected]>
Cc: <[email protected]>
Sent: Thursday, August 29, 2002 11:43 PM
Subject: Re: [Antennas] Penetrox, Noalox, Alumatrox
> Tom,
>> Answer: Possibly. If the steel is carbon or cold-rolled or wrought
steel,
> and there is air and moisture present, there probably will be corrosion.
If
> the steel is one of the alloys known as stainless steel, there probably
will
> not be corrosion. I know of at least one copper J-pole antenna pressed
onto
> a cold-rolled steel rod that had been smeared with wheel-bearing grease
when
> installed almost eight years ago, and there is no sign of corrosion. Go
> figure.
>> 73, Eric Lemmon WB6FLY
>> Tom wrote:
>> > I have a copper jpole with a steel rod inserted at the base for greater
> > strength. Is this a bad combination or will one erode the other
> > electrolytically?
>>> - - -
>> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
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