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HP 59309A Digital Clock and K10-59992A
05-03-2021, 06:42 PM
Post: #1
HP 59309A Digital Clock and K10-59992A
My first post here!
I own a HP digital clock HP 59309A and can find lots of information on it.
What I can’t find is anything on the K10-599992A battery backup.
I’m trying to make a replica as they are close to impossible to find. I’m able to find a few online photos but that’s it. Supposedly you could access the batteries from the front as you may want to rack mount it. Any detailed information or point me in a different direction. I have emailed a few folks that may have one with no luck.
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05-04-2021, 12:29 AM
Post: #2
RE: HP 59309A Digital Clock and K10-59992A
Welcome!! Nice find!

There's a photo of one on the TimeNuts site here, so it seems like he's got one, Might be worth reaching out to him.
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05-04-2021, 12:32 AM
Post: #3
RE: HP 59309A Digital Clock and K10-59992A
I emailed him he is a busy guy I’m sure. Waiting Patiently
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05-06-2021, 01:13 PM (This post was last modified: 05-06-2021 01:14 PM by markgreco.)
Post: #4
RE: HP 59309A Digital Clock and K10-59992A
Patients is a virtue. Received this last night
HP 59992a
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05-06-2021, 03:02 PM
Post: #5
RE: HP 59309A Digital Clock and K10-59992A
Very nice! I'd only seen the front panel of that before - the inside was pretty interesting. I'm guessing the two transistors are for the battery check functionality.

Keep us posted if you decide to build something!
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07-06-2021, 03:46 AM
Post: #6
RE: HP 59309A Digital Clock and K10-59992A
I made a replica see it here. https://www.thingiverse.com/thing:4890680
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07-06-2021, 01:57 PM
Post: #7
RE: HP 59309A Digital Clock and K10-59992A
Brilliant piece of work!!

Please consider putting a copy of your summary, and a couple of photos, in the articles section. The work you did with duplicating labels, paint matching, etc. is a great general reference in addition to the details specific to the K10.

Thanks for posting!
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07-14-2021, 04:03 PM
Post: #8
RE: HP 59309A Digital Clock and K10-59992A
Bob here it is

further talk
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07-14-2021, 09:47 PM
Post: #9
RE: HP 59309A Digital Clock and K10-59992A
Neat! Thanks!! Particularly appreciate the information on the paint / decal approach!
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