Re: [time-nuts] WWVB teensy BPSK early experiments

een is not used and there > is nothing in the code that I see. I have no wires connected. Display is > stable. > > On Fri, Nov 13, 2020 at 11:09 AM John C. Westmoreland, P.E. < > j...@westmorelandengineering.com> wrote: > > > Hello Time Nuts, > > > > Pau

Re: [time-nuts] WWVB teensy BPSK early experiments

thub.com/chris-elfpen/Teensy4WWVBsdr > > You might have to adjust the I/O pins for Teensy 4.1 vs 4.0 > > I am having no problems with the display once I put in the source > > termination resistor. > > Been running for multiple days, so far. > > --- Graham &

Re: [time-nuts] WWVB teensy BPSK early experiments

irect measurement. > > > With respect to sine and cosine. It seems a second oscillator and a > third > > > oscillator that is 90 degrees out can be created. Supposedly these > would > > be > > > locked. (To be proven) > > > Regards > > > Paul >

Re: [time-nuts] WWVB teensy BPSK early experiments

a source resistance to absorb the > reflection of fast edges off the slave device input, reducing all the > bouncing and wiggles on the rising and falling edges of signals, > particularly important/beneficial on clock signals. > > --- Graham > > == > > > On W

Re: [time-nuts] WWVB teensy BPSK early experiments

reason to. > > On Wed, Nov 4, 2020 at 1:19 PM paul swed wrote: > > > Nope never seen it. Its as if the display is writing vertically and > > horizontally. > > > > > > On Wed, Nov 4, 2020 at 11:55 AM John C. Westmoreland, P.E. < > > j...@w

Re: [time-nuts] WWVB teensy BPSK early experiments

ll. >> > One very serious issue with the teensy is that the audio module must be >> > directly stacked on to the cpu. I originally used 3" leeds those little >> > jumpers. It makes a mess of the clock signals. >> > Regards >> > Paul. >

Re: [time-nuts] WWVB teensy BPSK early experiments

the teensy. No magic at > all. > > One very serious issue with the teensy is that the audio module must be > > directly stacked on to the cpu. I originally used 3" leeds those little > > jumpers. It makes a mess of the clock signals. > > Regards > &

Re: [time-nuts] WWVB teensy BPSK early experiments

gt; notepad ++ to look at the code. Pretty exciting. > > Regards > Paul > WB8TSL > > On Mon, Nov 2, 2020 at 8:24 PM John C. Westmoreland, P.E. < > j...@westmorelandengineering.com> wrote: > > > Hello Time Nuts, > > > > I have a question - > >

Re: [time-nuts] WWVB teensy BPSK early experiments

Hello Time Nuts, I have a question - Has anyone been successful getting WWVB to decode using the example for DCF77 and making the changes for WWVB? Chris has his own approach - it's interesting - but on my setup at least I haven't been successful with it - maybe it's my antenna - not sure just

Re: [time-nuts] WWVB teensy BPSK early experiments

Ray, https://github.com/chris-elfpen/Teensy4WWVBsdr 73's, John AJ6BC On Sat, Oct 31, 2020, 18:31 wrote: > Bob, > > "Things already accomplished by Chris in the wwvb AM receiver" > > Is there a link to the AM receiver? Curious as to what that looks like. > > Ray, > AB7HE > > Original

Re: [time-nuts] WWVB Dephaser Question

Hello Time Nuts, I'm going to try a two antenna approach - parts are on order. Buying a 2nd board vs. trying to implement a low-noise amplifier is a wash for the cost for the 2nd audio board. It will require a few board mods - but they are simple. When I have some interesting results, I will

Re: [time-nuts] WWVB Dephaser Question

rduino blinky program you have to start someplace. > Regards > Paul > WB8TSL > > On Fri, Oct 23, 2020 at 7:55 PM John C. Westmoreland, P.E. < > j...@westmorelandengineering.com> wrote: > > > Hello Time Nuts, > > > > The code that has been previously discussed in

Re: [time-nuts] WWVB Dephaser Question

further down that page for 4-channel audio (Quad). I think something similar could work for BPSK. 73's, John AJ6BC On Fri, Oct 23, 2020 at 8:34 PM John C. Westmoreland, P.E. < j...@westmorelandengineering.com> wrote: > Hello Time Nuts and Paul, > > Glad to hear you're

Re: [time-nuts] WWVB Dephaser Question

, 2020 at 12:27 AM John C. Westmoreland, P.E. < j...@westmorelandengineering.com> wrote: > Hello Time Nuts, > > FYI: Teensy NTP server found here: > https://github.com/ddrown/teensy-ntp > > 73's, > John > AJ6BC > > > On Sat, Oct 17, 2020 at 1:16 PM pa

Re: [time-nuts] DSP-93 Source For WWV/H

Hello Time Nuts, Indeed Hal! Wow - thanks! Good stuff to go over. And - for those that are new to SDR and I/Q stuff - his docs go over that pretty well. 73's, John AJ6BC On Mon, Oct 19, 2020 at 3:33 AM Hal Murray wrote: > > I wonder if anyone has taken this source and done that already. >

Re: [time-nuts] DSP-93 Source For WWV/H

Hello Trevor, Yes - I see that now - thanks! Wow, 'c2x assembly - this will be fun. I noticed in his paper(s) (I used the wayback machine) - he has: "The clock should be rewritten in portable C for use on a fast workstation with integrated audio codec." I wonder if anyone has taken this

Re: [time-nuts] DSP-93 Source For WWV/H

Hello Poul-Henning, I was unaware of Dr./Professor Mills' current condition - thanks for letting me know. 73's, John AJ6BC On Sun, Oct 18, 2020 at 10:46 PM Poul-Henning Kamp wrote: > > John C. Westmoreland, P.E. writes: > > > Some of you may already be aware of this w

[time-nuts] DSP-93 Source For WWV/H

Hello Time-Nuts, Some of you may already be aware of this web-page/project: Precision Radio Clock for Station WWV/H Transmissions https://www.eecis.udel.edu/~mills/teaching/eleg403/wwv/wwv_dsp93/ I've attempted contact with Dr./Professor Mills (W3HCF) - but as he's been retired for some time - I

Re: [time-nuts] WWVB Dephaser Question

ram. > Regards > Paul > WB8TSL > > On Sat, Oct 17, 2020 at 12:06 PM John C. Westmoreland, P.E. < > j...@westmorelandengineering.com> wrote: > > > Hello Time Nuts, > > > > Maybe this should be added to this thread - this page is actually pretty > >

Re: [time-nuts] WWVB Dephaser Question

Hello Time Nuts, Maybe this should be added to this thread - this page is actually pretty good: https://en.wikipedia.org/wiki/WWVB 73's, John AJ6BC On Tue, Oct 13, 2020 at 12:50 PM John C. Westmoreland, P.E. < j...@westmorelandengineering.com> wrote: > Hello Time Nuts, > >

Re: [time-nuts] WWVB Dephaser Question

ter > > > a good start in the world of SDR. (At least I do not see an I > approach) > > > Regards > > > Paul > > > > > > On Tue, Oct 13, 2020 at 2:47 AM John C. Westmoreland, P.E. < > > > j...@westmorelandengineering.com> wrote: &

Re: [time-nuts] WWVB Dephaser Question

ntenna solenoid would be a bit longer ( say 2 X to 5X ). > >>> The turns should be spaced apart by a few percent of the length. > >>> ( so turns over 30 or so … not so much …). > >>> > >>> How much better is “ideal” compared to “just get it done?”. At

Re: [time-nuts] WWVB Dephaser Question

Paul, Doesn't the post by Chris Howard above appear to be a good/great starting point? Seems like that approach could be extended. https://github.com/chris-elfpen/Teensy4WWVBsdr 73's, John AJ6BC On Sun, Oct 11, 2020 at 9:23 AM paul swed wrote: > Good morning to the group. Both Rodger and I

Re: [time-nuts] WWVB Dephaser Question

Its been operational for 7 years with an occasional > transistor replacement. Also coax, darn woodpeckers! > Regards > Paul > WB8TSL > > > On Fri, Oct 9, 2020 at 5:14 PM John C. Westmoreland, P.E. < > j...@westmorelandengineering.com> wrote: > > > Bob, > >

Re: [time-nuts] WWVB Dephaser Question

….. > > Bob > > > On Oct 8, 2020, at 11:30 PM, John C. Westmoreland, P.E. < > j...@westmorelandengineering.com> wrote: > > > > Hello All, > > > > Are there any design details someplace regarding these massive antennas? > > > > Thank

Re: [time-nuts] WWVB Dephaser Question

Hello All, Are there any design details someplace regarding these massive antennas? Thanks, John AJ6BC On Thu, Oct 8, 2020, 19:27 paul swed wrote: > Hello to the group. > Ray as Bob mentions you are taking a 10s of uv signal to a logic level of > maybe 4V. > If the loop is any place close to

Re: [time-nuts] IC Used In WWVB Receiver (Link In E-Mail)

Just a quick update: I suppose the module could be a clone of this: https://www.mas-oy.com/wp-content/uploads/2016/05/DAEV6180B1COB.pdf 73's, John AJ6BC On Tue, Sep 22, 2020 at 2:34 AM John C. Westmoreland, P.E. < j...@westmorelandengineering.com> wrote: > Thanks for the response Bi

Re: [time-nuts] IC Used In WWVB Receiver (Link In E-Mail)

ground to a 3 Hz > higher frequency (except 5 Hz higher for 68.5 kHz). Stray capacitance below > 1 pF can affect the crystal resonant frequency. See: > https://www.mas-oy.com/portfolio/mas6180c/ > https://www.datasheetq.com/datasheet-download/477051/1/MAS-Oy/MAS1016BTB1 > -- > Bil

[time-nuts] IC Used In WWVB Receiver (Link In E-Mail)

Hello Time Nuts, Does anyone know which IC is used in the following: (Note: Links have been sanitized by the list moderator.) WWVB Receiver on Amazon It also comes with a clock module: With Clock Module

Re: [time-nuts] More ES100 / WWVB BPSK chips

Thanks Tom! John On Sun, Sep 20, 2020 at 1:19 AM Tom Van Baak wrote: > There were couple WWVB threads recently. > > One of the questions was if the La Crosse UltrAtomic 404-1235UA-SS wall > clock is still the only WWVB clock that uses the new BPSK format. I > learned that 3 different companies

Re: [time-nuts] WWV / WWVB Reference Feed

Tom, Thank you for the paper references. (73's) Best Regards, John Westmoreland AJ6BC On Wed, Aug 12, 2020 at 8:38 PM Tom Van Baak wrote: > Don, > > The main NIST frequency standards lab is in Boulder, CO where UTC(NIST) > is maintained. They have a large ensemble of clocks, ranging from >

[time-nuts] New GPS Antennas From Molex

Time Nuts, These are interesting: https://www.molex.com/molex/products/family/gnssgps_antennas 73's, John AJ6BC ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to

Re: [time-nuts] Stanford University online GPS course

Thank you Peter for posting this! 73's, John W. AJ6BC On Wed, Jun 3, 2020, 11:33 Peter Vince wrote: > I've just been told about an online undergraduate course on the GPS system > done by Stanford University. I don't remember reading about it on here, > and a quick check of the archives drew a

Re: [time-nuts] GPS antenna splitter recommendation?

Hello All, FWIW, I've been using Model Number 2401IFD from Channel Master (power divider) for quite some time - works good for me. I bought the one I have from Halted here in the Bay Area when they were still open - didn't spend more than $10 on it if memory serves me. Regards, John W. AJ6BC

Re: [time-nuts] U-Blox GPS Module At All-Electronics Corp

Hello Hal, The PPS signal is on pin #3 - on the lower right in the picture - you'll see the LED and the resistor - you should be able to pick off the PPS signal from there. 73's, John AJ6BC On Sat, Sep 21, 2019 at 5:00 PM Hal Murray wrote: > > j...@westmorelandengineering.com said: > > Just

[time-nuts] U-Blox GPS Module At All-Electronics Corp

To All: Just saw this at All-Electronics - thought some here could be interested: https://www.allelectronics.com/item/gps-8m/gps-module/1.html 73's, John AJ6BC ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to

Re: [time-nuts] GPS Antennas

To the OP, Dan, Just curious - do you use something like this: https://endruntechnologies.com/products/antennas-accessories/lightning-arrestor Good luck with the new antenna. 73's, John AJ6BC On Sat, Sep 7, 2019 at 3:17 AM Björn wrote: > https://www.ngs.noaa.gov/ANTCAL/# > > Look at say an

Re: [time-nuts] Marine GPS antenna at SF Bay Area surplus shop

Hello Gary, I went by Excess Solutions today in San Jose and picked up two of these - they are in a box on the "antenna aisle - (6)" toward the end of the aisle on the RHS at the top. There were actually around 10 or so in that box - so there's at least 8 left as of this afternoon. They all

Re: [time-nuts] GPS week rollover

To All: I have a related question; hope it's OK: What are these companies using for their "GPS Simulation/Simulators?". Is it actually simulating the RF downlink or is a direct data stream injection into a tap into the receiver?? Thanks In Advance, John W. On Fri, Mar 29, 2019 at 11:00 AM

Re: [time-nuts] NIST time and frequency seminar - 11-14 June in Boulder, CO

Jim, ... Please register by June 4, 2019 to ensure your spot at this event. The registration fee is $1,900. Thanks for the heads up. Best Regards, John W. On Fri, Feb 15, 2019 at 3:00 PM jimlux wrote: > > https://www.nist.gov/news-events/events/2019/06/2019-nist-time-and-frequency-seminar >

Re: [time-nuts] Stuff

Bob, Sorry - this may not have come through - my e-mail: j...@westmorelandengineering.com On Thu, Aug 16, 2018 at 5:14 PM, John C. Westmoreland, P.E. < j...@westmorelandengineering.com> wrote: > Bob, > > Can you please send me your personal email address so we can have a brief &

Re: [time-nuts] Stuff

Bob, Can you please send me your personal email address so we can have a brief discussion off-list? Thanks, John Westmoreland (I'm just nuts, and not only about time! Ha!) 408-772-6237 On Thu, Aug 16, 2018 at 2:56 PM, Bob Martin wrote: > Hello, > > I am not a Time-Nut but I did work in

Re: [time-nuts] Loss of NIST transmitters at Colorado and Hawaii

I hope this does not happen. I get questions from new Hams that ask, 'How can I check my antenna easily?' - the quick reply is to check for WWV on 2.5, 5,0, 10.0, 15.0 and 20.0 MHz. Also, from my days in the Merchant Marine until now, I for one will truly miss this service if it is discontinued,