[time-nuts] DATUM OCXO

[ernieperes at aol.com]

Hi Gents,


Anybody having a data-sheet or any other info about the following item:

DATUM OCXO 06
023034-005
10.000MHz
other code on the back side:
033666
41597-005
Size is about 1,2x1,2x0,5... I have the pin assignment/voltage... but 
no any details.


Thanks and best regards,
Ernie.


-----Original Message-----
From: wa3frp at aol.com
To: time-nuts at febo.com
Sent: Thu, 4 Sep 2008 1:42 pm
Subject: Re: [time-nuts] Description - GR 1120-AB Frequency Standard



Hi Jim,

My thermoswitch was manufactured by Princo, a company that is still in
business with headquarters in the Philadelphia area.

I've googled "Princo" for the past couple of years, spoken with folks
at Princo, and have a search setup in eBay. Nothing has turned up yet.

I've decided to move on since I'd like to complete the restoration of
the GR Standard. I purchased a Fenwal thermoswitch that comes closest
to the sensitivity of the original thermoswitch.

If a 78C Princo thermoswitch becomes available in the future, I'll be
able to reverse the modifications that I am currently making to the
inner oven.

Thanks to everyone on the list for their advice and assistance.

Russ WA3FRP


-----Original Message-----
From: Jim Hall <perseidjh at hotmail.com>
To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
Sent: Wed, 3 Sep 2008 10:06 pm
Subject: Re: [time-nuts] Description - GR 1120-AB Frequency Standard



Russ,

Sorry but the only thermoswitches he has or knows about are for 60 or
70
degrees C units he has. I think he got his switches from GR crystal
ovens
used for BC transmitters. I imagine their requirements were less
stringent
than the "standards lab" standard you are rebuilding but then again you
never know.

Most of the thermoswitches he has were manufactured by "Precision" or
at
least that was written on each of them. Another thermoswitch was
manufactured by "H inside a diamond, B inside a diamond". I think both
the
GR thermoswitches were manufactured by Precision. I wonder if you
could
search on eBay or other sites for that name if that is who manufactured
yours. Probably a long shot but just wondering.

Jim



--------------------------------------------------
From: <wa3frp at aol.com>
Sent: Wednesday, September 03, 2008 7:55 PM
To: <time-nuts at febo.com>
Subject: Re: [time-nuts] Description - GR 1120-AB Frequency Standard

> Jim,
>
> Thanks for following up on this. The thermoswitch that I'm looking
for
> closes on reaching a trip temperature of 78C. The original unit was
> made by Princo. I wonder if your friend could tell me if he has any
> leads on a 78C thermoswitch.
>
> Thanks again,
>
> Russ
>
>
>
>
>
>
>
> -----Original Message-----
> From: Jim Hall <perseidjh at hotmail.com>
> To: time-nuts at febo.com
> Sent: Wed, 3 Sep 2008 8:04 pm
> Subject: [time-nuts] Description - GR 1120-AB Frequency Standard
>
>
>
> Today I visited a friend who collects all sorts of old electronics and
> asked him
> about mercury thermometer sensors. Turns out he had several from
> various GR
> pieces of equipment. Some are in a straight shape with "trip"
> temperatures of
> 50 or 60 degrees C. One is at a 90 degree angle with a 60 degree C
> trip point.
> I'm sure it is a very long shot but I wondered if any of these might
> work for
> the frequency standard you are rebuilding.
>
> Most of the above temperature sensors were built by "Precision". I
> have the
> part numbers.
>
> What do you think? Does it sound like any of these could be
> replacements for
> your unit?
>
> Regards,
>
> Jim
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>

_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to 
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.