[time-nuts] Interesting eBay-item?

John Day johnday at wordsnimages.com
Thu Feb 2 12:12:19 EST 2006

Back about 1986 or 1987 HP produced three prototype Mercury trapped 
ion standards for the USNO. I don't know if they built any others. 
This listing shows just one rack, I cannot recall if it was these 
units or a Maser prototype built by HP that was actually in two racks.

Several papers appeared in the mid-90's talking about the experience 
of the USNO with these over 8 or 10 years.


At 11:51 AM 2/2/2006, Christoffer Bruman wrote:

>Dear List,
>perhaps this item could be of interest to some fellow time-nut?:
>If the link does not work, its eBay item 7586640474. And no, I have no
>connection to the seller or the item, I just found it interesting since
>I have never heard of HP manufacturing such a system.)
>  From the look of it, and some of the HP part numbers, it has a very
>custom/one-off feel about it. Perhaps anyone on the list has any details?
>Best regards,
>Christoffer Bruman (wannabe time-nut, still excited from winning a good
>10811 from eBay...)
>time-nuts mailing list
>time-nuts at febo.com

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