[time-nuts] Rubidium for HP 53131A

Arthur Dent golgarfrincham at gmail.com
Mon Feb 19 22:22:40 EST 2018

some time ago I did the same thing to a Fluke/Philips PM6680 counter.
I didn't need the GPIB so I mounted the X72 on the back panel where
the interface would normally go. The 3Ghz board I got from Poland.
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