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

Hal Murray hmurray at megapathdsl.net
Tue Feb 25 23:55:46 EST 2014


jimlux at earthlink.net said:
> there's a BIG jump in  cost when you cross that 18GHz boundary line. 

What's magic about 18 GHz?  Why not 16 or 20?


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