Re: [time-nuts] Thinking outside the box a super reference

2016-11-04 Thread Gian-Paolo Musumeci
On Fri, Nov 4, 2016, at 02:27 PM, Poul-Henning Kamp wrote: > > In message <2af27ebe-9200-c348-c89b-b98f9c973...@karlquist.com>, "Richard > (Rick) Karlquist" w > rites: > >Also, one of the Rb isotopes is slightly radioactive. > >35 years ago, the guy in the next cubicle got away with >

Re: [time-nuts] Best Chance GPS module

2016-12-01 Thread Gian-Paolo Musumeci
On Thu, Dec 1, 2016, at 09:01 AM, Chris Albertson wrote: > The other thing you might look at is NOT using NTP but using PTP. This > might be a better match to your needs but it requires that you replace > all your network gear with equipment that can make hardware time stamps > on the network

Re: [time-nuts] Using 5335 frequency counter for timing

2017-05-07 Thread Gian-Paolo Musumeci
On Sun, May 7, 2017, at 20:11, Hal Murray wrote: > kb...@n1k.org said: > > None of them will do as well as a really fast scope. > How accurate is the clock in a scope? Do the high end scopes have an > external clock input? My scope (Keysight MSOX3104, so 1 GHz) is rated at ±1.6 ppm (after a 30