[time-nuts] AN/URQ-10A standard docs

[paul swed]

My bad its in front and easily accessible.


On Wed, Jul 10, 2019 at 7:36 PM paul swed <paulswedb at gmail.com> wrote:

> Walter looking at the manual. There is a coarse adjust in back of the unit
> and the cap was c102. But its a test and install cap and I do not see it
> listed in the parts.
> Regards
> Paul
> WB8TSL
>
> On Wed, Jul 10, 2019 at 7:26 PM paul swed <paulswedb at gmail.com> wrote:
>
>> Well I thought I might have an an/urq10 manual. Don't. I do have one more
>> place to look. Do have the an urr/r1051a and URA-17 TTY converter and
>> actually have both of those actual units in working condition. Though the
>> 17 has not been on in a long time. Worked on all of them circa 1975. Our
>> ship had 3 X URQ10s. They were considered something at the time. All
>> relative in reality.
>> Walter all that said, do let it bake in for several days to a week and
>> see if it gets better.
>> I suspect it may not after what 40 years?? There is a cap that can be
>> changed in the oven and I want to say the inner assembly was not that
>> difficult to deal with. The manual should indicate what the cap was tempco
>> and such. But its been a really long time.
>>
>> With some humor I am one of many who wouldn't mind an URQ10. It sort of
>> completes the micro-ship system I have. Complete with operating
>> transceiver. Though the micro-ship was never really a goal. It just sort of
>> happened.
>> Last note. The nicads in the pack were very good. They did last a long
>> time though the charging circuit was not really very good. The nicads today
>> have fairly short operational life. I have purchased new non-surplus ones
>> when they were available. They simply lasted maybe 3-4 years. I mention
>> this because I had a stack of the URQ10 nicads and they lasted 30 years
>> with reasonable run time.
>> Enjoy your find Walter.
>> Regards
>> Paul
>> WB8TSL
>>
>> On Wed, Jul 10, 2019 at 4:30 PM John Ackermann N8UR <jra at febo.com> wrote:
>>
>>> I have several pages of schematics at:
>>>
>>> https://www.febo.com/pages/hardware/AN_URQ_10/
>>>
>>> but unfortunately not the full manual.
>>>
>>> John
>>> ----
>>>
>>> On 7/10/19 12:43 PM, Walter Shawlee 2 wrote:
>>> > Does anybody have the manual for this old standard?  mine works, but is
>>> > a bit high, and needs internal adjustment, and a new battery pack.
>>> > pretty good condition for this old unit, and the 5MHz output is only
>>> > 4.8Hz off after heaven only knows how many years in a dark corner. it's
>>> > only been running for 12 hours, so it might drift in after 30 days at
>>> > the oven temperature, but my offset adjustment is maxed out.
>>> >
>>> > I have had good luck converting the older 5Mhz standards to 10Mhz using
>>> > a cheap chinese doubler board off ebay and a 10Mhz bandpass filter. the
>>> > results were great (although about 6dB down from the original level),
>>> > and made them a bit more useful around the shop as an external
>>> reference.
>>> >
>>> > Any PDF would be appreciated.  All my web searches were total dead ends
>>> > so far.
>>> > all the best,
>>> > walter
>>> >
>>>
>>>
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>>