Ray Are you speaking to the d-psk-r software? Its quite a bit more involved than what you mentioned. Its in the coding sequence. But could it be put on a bluepill absolutely. Its worked on all of the arduinos we have tried. The other thing is that by feeding a 60 KHz CW signal into the d-psk-r modulator/flipper it turns the signal into a wwvb bpsk signal. No AM modulation. But for bench testing its a noise free signal. But I am interested in the approach you are trying to develop that I guess might be a SDR solution. Good luck looking forward to your success. Regards Paul.
On Thu, Jul 30, 2020 at 6:25 PM <rcb...@atcelectronics.com> wrote: > Rodger, > Thanks for the code and explanation. I will load it into an Arduino and > connect one of my ublox modules to it. When I get the RF front end put > together the emulator should give me a nice signal to look at on the > scope. To feed my own data in I could program a Blue Pill board with a > NEMA string and have it send the string every 60 seconds. I took a quick > look at your code. From what I can see you read a sentence, then send > the data over a 60 second period, delay 150 msec, and wait for the next > sentence to come in. I could have the Blue Pill send the string and then > count 60 pulses from the GPS and send the string again. Rinse and > repeat. > > Bob, > I am guessing what they are doing is to simply determine if the phase > has changed since the previous second. That is necessary in order to > extract the time/date information. That way you can get within a couple > of hundred milliseconds of current time. Certainly good enough for a > consumer clock. I have no need for time precision or frequency > calibration. I already have GPS equipment I have assembled for that > purpose. > > Paul, > I know I can purchase the ES100 kit when they become available again. > But I want to do it myself with discrete chips and parts to prove I can > do it. That way I learn something new and kill time (no pun intended) in > the process. > > Tom, thanks for the links. Interesting reading. > > Ray, > AB7HE > > -------- Original Message -------- > Subject: Re: [time-nuts] WWVB PM Time Questions > From: Bob kb8tq <kb...@n1k.org> > Date: Thu, July 30, 2020 12:53 pm > To: Discussion of precise time and frequency measurement > <time-nuts@lists.febo.com> > > Hi > > Since they have no interest in extracting the carrier phase for timing, > there is no real need for a fancy oscillator …… Their definition of > “precision” and the TimeNut definition are pretty far apart. > > Bob > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.