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Mobile antenna issue
Michael Coslo wrote:
I have even considered an acid flux bath, followed by a long water rinse, but that's always been verboten for electrical work. FWIW, I "pickle" the heavily oxidized copper antenna wire I have to solder by wrapping a paper-towel sheet around the joint, pouring a tablespoon of "Lime Away" on it, waiting half an hour and then unwrapping and rinsing it throughly with tap water. The copper has a reddish, 'blistered' look and soaks up solder like a sponge. I make it a point to tin all of the "pickled" copper on either side of the joint as well as the joint itself. The prohibition against using 'acid-core' solder on electronics was that the acid flux was actually a solid, would remain on the connection and be activated by moisture later, eating away the connection and the wires. The active acid in "Lime Away" is good old sulfuric, which is washed away in this case by liberal amounts of applied water or later rainfall. Jim, K7JEB |
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