[time-nuts] Datum 9390 - Y2K update?

Mike Feher mfeher at eozinc.com
Sat Mar 11 12:07:02 EST 2006

I also purchased a version of the 9390 off of ebay last year. This one has a
rubidium inside. I asked a lot of questions about it on here, and elsewhere,
and the general consensus was that because of the week rollover it would
likely not work. Well, I entered my local coordinates after turning it on.
And, low and behold after a short while the actual date and time came up on
the display. The information on the LCD display still seems flaky as at
times it tells me that there are 2 usable satellites, or no usable
satellites, or it is doing a GPS correction. Regardless of what it says, it
always seems to lock on and always displays the correct time. It came all
the way from California so had a totally different set of initial position
coordinates programmed into it. The attached photo shows it running next to
a Z3801A. The copper mesh on the top of the Z3801A is something I put on
there in place of the original cover as it just seemed to run way too hot. I
also built a linear AC to DC power supply into the box. It was a tight fit.
Good luck with your 9390. I seemed to luck out with mine. Regards - Mike

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Karl F Strauss
Sent: Monday, March 06, 2006 9:17 PM
To: time-nuts at febo.com
Subject: [time-nuts] Datum 9390 - Y2K update?

I just purchased a Datum 9390 off EBay.  The seller is warning me that she
was told that the 9390's need some sort of update w/r/t Y2K in order for it
to operate.  The seller states (and the pticures show) that the unit
responds Self Test OK during power on.

The seller is giving me the right to bow out of the sale if the unit cannot
work.  My main goal here is to develop a precise 1PPS and millisecond tick.
To be able to pre-set the time and date would be ideal but not ABSOLUTELY

Advice, please!

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