[time-nuts] Fleamarket find

Ed Palmer ed_palmer at sasktel.net
Mon Oct 18 21:57:00 UTC 2010

Ed Palmer wrote:

Sorry, the picture was too big.  Let's try again.


> Arthur Dent wrote:
>> Ed Palmer wrote:
>> "I have an HP105B e/w a 10811-60109 oscillator.  It has the same 
>> physical  configuration as all other plug-in 10811s.  It's plugged 
>> into the  00105-6044 board that you mentioned.  This combination was 
>> also  apparently used in the 5061B Cs standard.  You can see it in 
>> the  pictures in the manual.  I also have a couple of the older 
>> 00105  oscillators.  Totally different physical configuration 
>> compared to the  10811 / 6044 combination, but the two are 
>> plug-compatible."
>> Here is a photo of a 10811 (with a 5061 p/n) and the HP 105 
>> oscillator that I just bought. They are not plug compatible.
>> http://farm5.static.flickr.com/4153/5094715304_90206b98fd_b.jpg
>>  -Arthur
> My mistake.  I should have said that the older 105 oscillator is 
> plug-compatible with the combination of the 10811 and two add-on 
> boards.  The first is the 00105-6044 board that you mentioned.  It 
> includes voltage regulation and oven monitor circuitry.  Both the 
> 10811 and the second board plug into the 6044 board.  The second board 
> is 05061-6165.  It includes frequency divider, amplifier, and level 
> adjust circuitry to make it plug-compatible with the older 
> oscillator.  Here's a picture of that board.  Notice the 4 SMB 
> connectors and the four single lead connectors - just like the older 
> oscillator.  The 110 VAC heater on the old oscillator isn't needed 
> with the 10811 so they didn't duplicate that.
> Ed 

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