On 28/02/2015 18:09, Tom Van Baak wrote:
Hi Daniel, That will be an interesting experiment. I'm happy you are doing it. You may want to run all five boards within the same house first -- to establish your noise floor and to check your post-processing (non-aligned log files, glitches, power fails, oscillator drift, etc.).
Surelly... I must first discover how well (or how badly) it works....
Here's one from a couple years ago, between two cities, and two states. http://leapsecond.com/pages/mains-cv/
Thanks for the link! Daniel
/tvb ----- Original Message ----- From: "Daniel Mendes" <dmend...@gmail.com> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Saturday, February 28, 2015 10:34 AM Subject: Re: [time-nuts] Recording mains frequency/phase [WAS: No GPSsatellites] I´m planning an experiment like that... I designed a board with an OCXO, pic microcontroller, power supply, mains interface with optocoupler, and SD card for data collection.. I plan to sincronize a counter running at 10MHz between them and log events at 5 different points in my city. The boards also have a small Li-Ion battery and battery charger for short power outages. Boards are manufatured and the most expensive items have been bought, but not everything yet. Daniel _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
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