[time-nuts] What are people paying for Stanford PRS10 rubidium standards?

Brian Kirby kirbybq at bellsouth.net
Wed Apr 27 08:12:50 EDT 2005

"On the bright side, that seller _does_ seem to know what he's doing, 
and I've seen him on ebay for a long time, so I'd believe him when he 
says that the oscillator is working perfectly."

Rex reported the issues we had with the seller. I directly asked him 
several questions about programming before buying the rubidium and he 
pointed to links from the manufactuer and to TVB's site on the 5650.  
They were not for the unit he sold.  After returning the unit and 
receiving another unit with the same symptoms, I got with Rex and he had 
reverse engineered the unit and I was able to power it up and test it.  
I went back to the seller about programming, as he said he had a friend 
that knew how to program the units, and ask for an introduction to his 
friend.  I never heard from him again. 

I am currently working on a project to discipline a Efratom FRS-C with a 
Motorola M12+ GPS receiver and Brooks Shera's GPS controller.  I had 
previously reported some data on the project and basically the 
disciplining is working but its degraded the short term stability of the 
rubidium.  Brooks has programmed a PIC with a longer time constant for 
me and it has improved some specs on MTIE, but the short term is still 
down.  I am retesting with another filter mode "Alpha" and will report 
the results back to him soon.

Basically we are in the process of fine tuning a PIC for my rubidium and 
as everybody knows, it takes a little time to see the results.


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