[time-nuts] Re: Regarding HP 5065A upgrade to 10811-oscillators

[Ke-Fong Lin]

Hi everyone,

Last month, I bought a 10811-60109 on ebay, it was sold with the
complete oscillator assembly for a 5061A/B cesium clock.
I bought it for the 10811-60109 because it has somewhat better
specifications than a regular 10811.

It was sold as a spare from military surplus. I've taken a quick look
and it seems compatible with the older 5061A connections.
I mean electronically, but I'm not so sure about the mechanical part.
So it may well be such an upgrade kit, but for 5061.

The PCB board doesn't seem complicated and HP basically used
"jellybean" components on it.
But as for the mechanical part, there would be some work to do.

By the way, if somebody wants to do the upgrade for a 5061, I can
basically give him/her the complete assembly.
Minus the 10811-60109 of course :)

Best regards,

On Sat, Feb 12, 2022 at 2:10 PM Ulf Kylenfall via time-nuts
<time-nuts at lists.febo.com> wrote:
>
>
> Greetings forum.
> Yes - I have performed this upgrade, having obtaineda 10811 / high performance option.
>
> While the complete original HP kit was not available, I salvagedthe 10->5 MHz divider/connection board from a 105Band re-designed the back PCB with the 2 x 15pole 3.96 pitch connectors and mechanics
> so that the design would be ableto fit into the 5065A chassis in a way that the10811 Coarse adjustment could be reached with a longadjustment tool directly.
> Picture(s) available upon request.
>
> I have the design files (Cadence Allegro) as well asGerber/Drill files for anyone that want to fabricate sucha back plate board.
>
> Please contact me off-list if you want thedesign files.
> Best Regards
> Ulf KylenfallSM6GXV
>
>
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-- 
/* Lin Ke-Fong
 * anotherlin at gmail.com
 * I always do what I say, especially if it's something stupid.
 */