[time-nuts] HP 10811A vs 10811-60111

John Ackermann N8UR jra at febo.com
Sat Apr 23 17:51:23 EDT 2005

David Kirkby wrote:

> Can anyone tell me the difference between the two above oscillators? I 
> have the manual for the 97page manual (page 2 is upside down), but it 
> does not mention the latter.
> However, I think I have seen a small couple of page document somewhere 
> which listed the 10811-60111 as having no specification for phase 
> noise, and so therefore not an ideal choice for a low phase noise 
> oscillator. One might as well start with something that is specified 
> for a low phase noise.
> I can't however now find the exact spec of the 10811-60111. Can anyone 
> give me it?
> I won an auction for a 10811A on eBay and the seller said I could have 
> a 10811-60111 for the same price if I wanted it too. I said no, I 
> wanted the 10811A, but he has sent me the  10811-60111 instead.
> Is the 10811-60111 inferior? How does it differ from the 10811A?
Check http://www.febo.com/time-freq/hardware/HP10811-Specs.pdf which is 
an HP document (reproduced with permission) that outlines all the 
various versions of the 10811 and their specs.


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