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

[Bob kb8tq]

Hi

You just might find that kit will drop into a 5065 with minor 
mods…..

Bob

> On Feb 12, 2022, at 8:39 AM, Ke-Fong Lin <anotherlin at gmail.com> wrote:
> 
> 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.
> */
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