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

[Bob kb8tq]

Hi

Again, there is no basic difference between the 10811-60109 and any
other 10811 with the same basic pinout. ( They made two packages, 
one with an edge connector. Eventually they wrapped one up to put it
in a GPSDO). The only difference between the 60109 was a test and 
select process back when it was made. Its been long enough since that
test for it to be totally meaningless. 

Bob

> On Feb 12, 2022, at 10:15 AM, Bill Notfaded <notfaded1 at gmail.com> wrote:
> 
> Good morning-
> 
> My 5065A has a 10811-60109.  I thought that was a standard and part of the
> reason they work so well?
> 
> 
> Best Regards,
> 
> Bill
> 
> 
> On Sat, Feb 12, 2022, 7:21 AM Bob kb8tq <kb8tq at n1k.org> wrote:
> 
>> 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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