[time-nuts] Why discipline Rubidium oscillator?

[Jerry Hancock]

Thanks, Bob, I’ll have to start looking now. 

I’ve been looking for other counters, I only have 5371a x 2 and 5335a x 2 and some other TeK modules.  I went back and was reading the time-nut counter thread from 2008 and will have to keep looking for something I want to afford.

Tonight I was plotting one of the rubidium modules Gilbert gave me against my Lucent GPSDO.  I was just measuring frequency and I had some glitches that I think are from triggering.  The stdev on some 2 hours runs were .0017 with a frequency of 9,999,999.956 average.  I have a new power supply coming tomorrow and I’ll be able to move it into a room where I can try to tweak it closer to 10M.

The Adev plot of the Frequency was sort of weird looking, sort of like a flattened “U” with the dip around 10E-15.  I would have thought it should be more like a typical downward sloping line. I’ll have to read up and see what this indicates.

So much to learn, so little time.

Thanks for all the pointers. Someone should write a book, “Time-nuttery for dummies”.  

Jerry


> On Nov 20, 2017, at 9:54 PM, Bob Bownes <bownes at gmail.com> wrote:
> 
> 
> Cost of a cesium clock can go from less than you pay for a pair of doxco‘s to many tens of thousands. I think 5071’s are in 
> 
>> On Nov 20, 2017, at 23:50, Jerry Hancock <jerry at hanler.com> wrote:
>> 
>> I read up on the GPS L1/L2 and I think there is an L5.
>> 
>> And when you say “on the market” the real question is “can be purchased for 1/20th the price of new” like all the other re-purposed toys we buy,
>> 
>> Regards,
>> 
>> Jerry
>> 
>> 
>>> On Nov 20, 2017, at 6:43 PM, Dana Whitlow <k8yumdoober at gmail.com> wrote:
>>> 
>>> 
>> 
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