On 1/3/2025 4:22 AM, Rob Atkinson wrote:
If I were looking to buy a large number of UHF connectors, I'd buy a
single one to check it out first before buying a large number. I'd
buy two or three and try soldering them if solder is going to be used.
Yes, but -- for 30 years, I've been a member the Standards Committee of
the Audio Engineering Society, and principal author of most published
Standards on EMC. I'm still Vice-Chair of the EMC Working Group, and
have been a member of the WG on connectors for 30 years. As long as 25
years ago, I was hearing from engineers of major mfrs of connectors and
microphones about their problems with counterfeit products, and defects
in their manufacture that caused problems for users. With connectors, it
was everything from control of dimensions to contact material to
dielectric. With mics, it's all about how they sound. The mfrs on those
committees were from companies like Shure, AKG, Sennheiser, Neumann,
Switchcraft, Neutrik, and Belden. Amphenol was no longer selling audio
connectors by the time I became active; Switchcraft and Neutrik were and
still are the major, first rate players.
Thirty years ago, I was reading about counterfeit aircraft parts!
Far from these issues with technical products, I'm finding counterfeit
kitchen utensils and other household items.
About 20 years ago, a colleague, also a member of the Standards
Committee and a fine engineer, was buying knock-off Chinese mics and
reselling them to churches. He had a well-equipped lab to measure them.
They would send him samples that were wonderful, but the quantity orders
arrived, they were junk -- measured performance was random.
73, Jim K9YC
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