Hello all -
I just ordered a 7-element log periodic antenna from Tennadyne (Model
T7) for use on 10 thru 17 meters. I am planning on putting it up in a
I have been getting some confusing advice for corrosion prevention
during the assembly of the antenna.
Several hams have told me to be sure and put a coating of "Penetrox"
or "OX-guard" on every electrical connection while assembling the
antenna. The antenna is made of 6061-T6 aluminum.
But in talking with Tennadyne, they say DO NOT use Penetrox or similar
compound, if you do, the antenna will not function properly. They
recommend using a combination of WD40 and "lock" graphite. They have
even put this in writing in the manual.
So who is correct? If I use Penetrox, it will be in violation of the
manufacturer's recommendations, and may even void the warranty.
By the way, my QTH is Northern Virginia near Washington, DC, so I am
not near a salt water environment.
Also, to add a little more confusion to the picture, according to the
Galvanic Series Chart for dissimilar metals, Graphite is on one end,
and Aluminum is on the other, which means those two materials are
highly corrosive together!
Any feedback is welcomed.
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