[time-nuts] 10811-60105 and -60111

Alberto di Bene dibene at usa.net
Tue Aug 17 12:50:51 EDT 2004


Tom,

  thanks for the answer. I was asking as often I see the -60105 submodel
offered on eBay at attractive prices. Now I know why, but maybe you are 
right,
aged OCXOs can give surprises.

Talking of OCXOs, supposing I want to build an outer oven around a 10811,
which could be the right temperature ? Anybody knows the outer oven 
temperature
of the double ovenized 10811 used in the Z3801A ?   Thanks.

73  Alberto  I2PHD
--------------------------------------------------

Tom Van Baak wrote:

>Both the -60105 and -60111 are slightly lesser
>grade versions of the 10811A; needing only to
>meet a short-term stability of 1e-11 at tau one
>second.
>
>The difference between the two is that the long
>term drift spec for the -60111 is 5e-10/day (like
>the 10811A) while the -60105 is 1.5e-9/day (3x
>worse).
>
>Keep in mind that the original specs often don't
>mean much after you get a 10 or 20-year old used
>10811. I've seen some cheap -60105's do really
>well and some expensive 10811A's do horrible.
>
>/tvb
>
>----- Original Message ----- 
>From: "Alberto di Bene" <dibene at usa.net>
>To: "Time Nuts" <time-nuts at febo.com>
>Sent: Tuesday, August 17, 2004 03:25
>Subject: [time-nuts] 10811-60105 and -60111
>
>
>  
>
>>What are the differences between a 10811-60105 and -60111 ?
>>I have a PDF from HP with the specs for the various 10811 models, but
>>while the -60111 is there, the -60105 is absent.
>>
>>Thanks for any info
>>
>>73  Alberto  I2PHD
>>
>>
>>
>>
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