[time-nuts] low power divide by 5

Tom Van Baak tvb at LeapSecond.com
Thu Jul 2 13:48:13 UTC 2020


 > I'm surprised nobody has suggested using the 12AX7 or 6J6 dual triodes.

Jim,

Funny, just yesterday I was looking at the design of a laboratory cesium 
beam standard from 1963. Sorry, there's no divide-by-5 example in there. 
But the attached images show the 108x multiplier (8.5 MHz to 9180 MHz). 
Sure enough, spot the 12AX7 and 6J6 tubes in use...

/tvb

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