[time-nuts] Restoration of 5065A - continued...

paul swed paulswedb at gmail.com
Mon Sep 11 14:48:31 EDT 2017

So curious did that get the unit running??

On Mon, Sep 11, 2017 at 2:22 PM, Ulf Kylenfall via time-nuts <
time-nuts at febo.com> wrote:

> When I mentioned redesign, it was the intention to copy the by HP updated
> designinto a new Cad project (I use Cadence PCB Editor for which I have a
> license)and then accomodate for more modern versions of the
> operationalamplifiers since I guess that there are not that many "A7"
> modulesaround as surplus. Even HP used DIP-versions in the updated design.
> Today, I was offered a partially scrapped 5065A for parts.The XO is gone
> but the Rubidium tube is there, (most likely brokenTX heater). I have no
> idea of how old this unit is, but perhaps some modules in itare more modern
> than the ones in mine.
> I would have loved to get my hands on a modern/late unit and do the
> Edmund-Opticsfilter installation (Super 5065A) as referenced here. Some
> yearsago there were one up for sale at a reasonable fixed price. I
> hesitatedand -  "kazing" - it was gone.
> I have so far replaced the 709's with 741's and removed the
> frequencycompensation components (I did that already yesterday).
> BR
> Ulf Kylenfall  SM6GXV
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