[time-nuts] Opera coordinator has resigned

[J. Forster]

Remember, there are two varieties of SMA: Those with a gold plated center
pin soldered onto the center conductor and those with a sharpened center
conductor of 0.141 hard line.

The latter are near junk, IMO.

-John

==============


> On 3/31/12 1:15 PM, Brooke Clarke wrote:
>> Hi Achim:
>>
>> SMA RF connectors have a very limited life (number of matings) until
>> they are worn out.
>
> I don't think so.  Yes, they're only rated for 500 cycles, but there's a
> paper by a guy at Maury Microwave that I ran across when trying to get
> statistics on the reflection coefficient variation, and he set up a
> automated rig to mate/demate SMAs something like 10,000 times.
>
> I suspect that there is a WIDE variation among mfrs in terms of life
> performance and manufacturing precision.
>
> the 3.5mm connector (sort of a precision, super SMA), is rated for 3000
> cycles.
>
>
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