[time-nuts] Pi Pico MSF Receiver

2022-04-29 Thread Nigel gm8pzr via time-nuts
For anyone who might be interested...Today's mailshot from Elektor magazine features a low component count MSF receiver and display based on the Raspberry Pi Pico board, and an even lower component count if a suitable antenna is already available

[time-nuts] Re: The Newest Second: NIST-F2

2022-04-29 Thread Tom Van Baak
That NIST news is from 2014; is your clock running a bit slow ;-) Still, thanks for posting, because it's timeless. A pair of comments: > https://www.nist.gov/si-redefinition/second/second-present There are two short videos on that page. The first is only 5 minutes long where Steve Jefferts

[time-nuts] Re: Can the ADEV of a GPSDO output ever be lower than the minimum of the ADEV of the internal oscilator and the ADEV of the GPS PPS?

2022-04-29 Thread André Balsa
Hi Erik, Mathematically, no, a GPSDO cannot have a lower uncertainty (ADEV) than the minimum observable uncertainty (ADEV) of the combined oscillator (disciplined clock) and PPS (disciplining clock) from the GPS receiver. Unless there is some magic trick to remove the uncertainty in a clock that I

[time-nuts] Frequency Mixers

2022-04-29 Thread John Moran, Scawby Design
The latest Technical Article from Analog Devices may be of interest to some of you - https://www.analog.com/en/technical-articles/the-changing-landscape-frequency-mixing-components.html?ADICID=EMAL_WW_P354759_MIX-NL-PN_1077=DM23404 John ___

[time-nuts] The Newest Second: NIST-F2

2022-04-29 Thread Brooke Clarke via time-nuts
Hi: https://www.nist.gov/si-redefinition/second/second-present NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock https://www.nist.gov/news-events/news/2014/04/nist-launches-new-us-time-standard-nist-f2-atomic-clock First accuracy evaluation of NIST-F2 (behind paywall)