Well I guess I am lucky to live only 20km from the DCF77 transmitter. I can receive DCF77 with a wet finger. I can even use a DCF77 controlled OCXO as my 10MHz standard. Probably not as good as a GPSDO but should be within 1x10^-10 or even better, well enough for my hamradio applications which is shortwave to UHF. If I ever get to it I will try to measure the frequency error of the DCF77 controlled oscillator over the day. I guess not much difference as I receive groundwave all day.
Even at my second home in southern France I have a strong DCF77 signal during the night with an indoor antenna (5cm ferrit rod). Heinz DH2FA Von meinem iPhone gesendet > Am 11.11.2016 um 09:14 schrieb Clint Jay <[email protected]>: > > I thought the same at first, but then I thought a little more, it may not > be time nut standards of accuracy but... > > It's possible to buy ESP8266 modules for a couple of pounds, they will run > NTP, if you want to go up market then a Pi Zero. > > Hooked up to a cheap DS1307 module or one of the higher stability ones, > then your choice of display, cheap SPI TFT, retro VFD or Nixies, you could > build an NTP synchronised clock for under £10. > > Rolling it yourself like that would allow you to negate the security risks > associated with IoT as you'd have control of the security aspects. > > On 10 November 2016 at 22:59, Ruslan Nabioullin <[email protected]> > wrote: > >>> On 11/10/2016 05:46 PM, Tom Van Baak wrote: >>> >>> To be honest, this is very impractical and backward-thinking. >>>> I would suggest instead upgrading to the Internet-of-things paradigm, >>>> replacing >>>> these time-of-day displays with full computers running NTP and connected >>>> to your LAN (Android smartwatches; repurposed old smartphones, tablets, >>>> laptops, etc.; and smartclocks >>>> >>> >>> Hi Ruslan, >>> >>> Please tell me this comment is humor or maybe just trolling. >>> Or are you actually serious? >>> >> >> I am absolutely serious. >> >> -Ruslan >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/time-nuts >> and follow the instructions there. >> > > > > -- > Clint. > > *No trees were harmed in the sending of this mail. However, a large number > of electrons were greatly inconvenienced.* > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
