* On 2019 16 Jun 22:04 -0500, Bob McGraw K4TAX wrote: > Yes, lugs can not be soldered alone. They must be crimped first and THEN > soldered. At the same time, some installations of aeronautical equipment, > along with NASA procedure, I do understand does indicate sweating solder > into the lug and it thereby wicking up into the stranded wires makes for a > "stiff" connection. This connection is reported to break under vibration > conditions. I've personally never experienced such with ham equipment, > although I've never carried any into space. I suppose there is merit to > this directive. Perhaps you FAA and NASA types can expand this thought.
I've noted this before. Before our shop started using crimp UHF connectors--RF Industries brand of connectors and crimper--we had a high failure rate of the kludge that is the PL-259 with the UG-174 adapter and blobs of solder (some installed by us, most from elsewhere). In various track machines, trucks, and other railroad equipment I never replaced a properly installed crimp connector. I did replace a number that came from the truck outfitters but those would arrive with a short or without the center pin making contact with the coax center conductor, but that is another story. Yes, annealing of the wire when using solder is a no-go where flexing may occur. 73, Nate, N0NB -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us GPG key: D55A8819 GitHub: N0NB ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
