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HP 59309A Digital Clock and K10-59992A - Printable Version

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HP 59309A Digital Clock and K10-59992A - markgreco - 05-03-2021 06:42 PM

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.


RE: HP 59309A Digital Clock and K10-59992A - BobVA - 05-04-2021 12:29 AM

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.


RE: HP 59309A Digital Clock and K10-59992A - markgreco - 05-04-2021 12:32 AM

I emailed him he is a busy guy I’m sure. Waiting Patiently


RE: HP 59309A Digital Clock and K10-59992A - markgreco - 05-06-2021 01:13 PM

Patients is a virtue. Received this last night
HP 59992a


RE: HP 59309A Digital Clock and K10-59992A - BobVA - 05-06-2021 03:02 PM

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!


RE: HP 59309A Digital Clock and K10-59992A - markgreco - 07-06-2021 03:46 AM

I made a replica see it here. https://www.thingiverse.com/thing:4890680


RE: HP 59309A Digital Clock and K10-59992A - BobVA - 07-06-2021 01:57 PM

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!


RE: HP 59309A Digital Clock and K10-59992A - markgreco - 07-14-2021 04:03 PM

Bob here it is

further talk


RE: HP 59309A Digital Clock and K10-59992A - BobVA - 07-14-2021 09:47 PM

Neat! Thanks!! Particularly appreciate the information on the paint / decal approach!