BACKGROUND: I have had several instances where a PL-259 loses contact with
an SO-239. I am told the problem occurs when a PL-259 is improperly
prepared, leaving extra solder on the pin, thus making it oversized. Once
inserted into the SO-239 the center female connector expands. Then when a
properly prepared PL-259 is inserted into the same SO-239, the center pin
connection is not snug enough to maintain proper contact because the SO-239
center female contact never returns to its original size.
QUESTIONS: Is there a way to repair a damaged SO-239 or once damaged, does
it need to be replaced? Are there SO-239s that are more tolerant to being
oversized, i.e. certain brands? Are there any simple ways to check for the
proper size of the PL-259 before inserting it into an SO-239? Are there any
tricks to make the mating of the PL-259 and SO-239 less susceptible to the
phenomenon I am describing?
Paul, W3GQ
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