Re: [time-nuts] Cold Rubidium over hyped?

2019-11-09 Thread Attila Kinali
Moin, On Fri, 8 Nov 2019 14:33:45 -0800 wrote: > Well I have been looking at the data in the > > https://www.researchgate.net/publication/325499937_A_portable_cold_87_Rb_ > atomic_clock_with_frequency_instability_at_one_day_in_the_10-15_range > > link and find that maybe they are

Re: [time-nuts] Cold Rubidium over hyped?

2019-11-09 Thread Bob kb8tq
Hi > On Nov 8, 2019, at 11:18 PM, cdel...@juno.com wrote: > > The pressure sensitivity for a classic design can easily be eliminated. > > I'm pretty sure that the old Varian R20 cell was mostly immune. > > Either using the R20 design or stiffer convex ends in a modern design > would work. > >

Re: [time-nuts] Cold Rubidium over hyped?

2019-11-09 Thread Magnus Danielson
Hi, On 2019-11-09 08:05, Poul-Henning Kamp wrote: > > In message , cdel...@juno.com writes: > > [long list of all the work to be done before the classical gas-cell Rb > improves materially] > > You are sort of making my point here Corby. > > It is not like people have not been improving

Re: [time-nuts] Raspberry Pi 4B Ethernet delay

2019-11-09 Thread David J Taylor via time-nuts
From: Hal Murray Your graph says peer delay. Do you have rawstats? The peer level has done some filtering. It would be interesting to see if the difference is visible to the eye on a graph. === Sorry, I don't have rawstats, but give a bit of time I could

Re: [time-nuts] Cold Rubidium over hyped?

2019-11-09 Thread Poul-Henning Kamp
In message , cdel...@juno.com writes: [long list of all the work to be done before the classical gas-cell Rb improves materially] You are sort of making my point here Corby. It is not like people have not been improving the Rb-Gas-cell, but if you want to improve it an order of