[time-nuts] Rubidium Performance

[John Ackermann N8UR]

Someone earlier today made the point that for all the talk about the FEI rubes, there hasn't been any real performance info posted.  That prodded me to start an experiment I've been meaning to do for a while.  I have samples of all three of the common telco Rb standards -- Efratom FRS, Datum LPRO, and Fe8-5680.

Over the next couple of days I'll do measurement runs of each of the three versus an HP-5065A laboratory Rb (for ADEV), and a Wenzel ULN (for phase noise).  I'll collect long enough to get solid ADEV out to at least 1000 second tau on each unit.  I have the FRS test running now.

If all goes well, I'll post the results early next week.

John