[time-nuts] A small piece on HP's hydrogen maser in 1968

Hal Murray hmurray at megapathdsl.net
Wed Feb 26 03:44:25 EST 2014


richard at karlquist.com said:
> Solid dielectric cable and connectors of 3.5 mm size are mode limited to 18
> GHz.  That is why there is so much stuff rated at 18 GHz as opposed to 16 or
> 20 GHz.  

Thanks.  That's what I was looking for.

Wiki says that SMA works to 18 GHz and the 3.5 mm is good for 34 GHz.
  http://en.wikipedia.org/wiki/SMA_connector#Variations



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