[time-nuts] Re: GPS failed

I have never seen such warnings. Yes, they do. Still, it is annoying to be piloting an aircraft in instrument conditions and have GPS go away. When it has happened usually I am prepared to switch back to VOR navigation. --  <https://www.lloyd.aero> Brian Lloyd 706 Flightline Spring

Re: [time-nuts] Leakage, tinySA

) are pretty good too. LMR195 is pretty good but not nearly as flexible as the aforementioned cables. LMR400 is just too big and inflexible for easy use on the bench. --  <https://www.lloyd.aero> Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero <mailto://br...@l

Re: [time-nuts] On choosing reasonable synthesizer PN requirements

m (of course it does) I can imagine, as the output of the array falls off, the MPPT algorithm "hunting" to find an optimum operating point and causing bus voltage to vary. Of course, it could always be the Radar Men from the Moon. -- Brian Lloyd 706 Flightline Spring Branch, T

Re: [time-nuts] GPS module recommendation for Pi timing

st impact. > That is indeed the question. Given the experience level here I was hoping that others had run into similar issues and might have more information to share with me, or even point me to something that would works as well or better than the Ublox. Thanks! I appreciate your input

Re: [time-nuts] GPS module recommendation for Pi timing

On Sat, Mar 14, 2020 at 10:57 AM Bob kb8tq wrote: > Hi > > > > On Mar 14, 2020, at 10:54 AM, Brian Lloyd wrote: > > > > On Fri, Mar 13, 2020 at 8:49 PM Bob kb8tq wrote: > > > >> Hi > >> > >> If you always operate in fixed loc

Re: [time-nuts] GPS module recommendation for Pi timing

hould I be looking at other units. While I don't want to spend $50(us) on a receiver, if it does the best job, it will fit the budget and that extra timing output I can use to generate 10MHz is quite attractive. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8F

Re: [time-nuts] GPS module recommendation for Pi timing

the best performance. Hal Murray: Yes, I am trying to discipline the system clock. Arne: Yes, I was considering using gpsd. Right now I am leaning toward the Ublox LEA-M8T. I have a use for the other programmable output from the Ublox. -- Brian Lloyd 706 Flightline Spring Branch, TX 7

Re: [time-nuts] GPS module recommendation for Pi timing

e in case we need to make more. > On Fri, Mar 13, 2020 at 10:07 AM Brian Lloyd wrote: > > > I have an application where I need to synchronize the internal TOD RTC > in a > > raspberry pi and need to pick a GPS module. We are building our own > > hardware but s

[time-nuts] GPS module recommendation for Pi timing

RTC and will run into diminishing returns, so even the M8T might be overkill. Has anyone here figured out what the reasonable limit is for timing on a Pi, and what makes sense for a timing module for an application like this? Thanks. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br

Re: [time-nuts] Chinese NTP Server Part 2

egulator and found a usable op-amp to use as a buffer. > I got in touch with them and they seemed very nice. They sent me a new > box and I've been running it for a few weeks. > > Brian Lloyd added the 2 parts to his unit and he was able to get a > decent output wave. The weird thing i

Re: [time-nuts] Are there SC-crystals out there in the wild that are not Overtone?

listinfo/time-nuts_lists.febo.com >>> and follow the instructions there. >>> <5MC5735H.jpg>___ >>> time-nuts mailing list -- time-nuts@lists.febo.com >>> To unsubscribe, go to >>> http://lists.f

Re: [time-nuts] Fake new LPRO 101 Rb's on Ebay?

could they have been backup units in a box that never got put into service? That would suggest that they have full life available on the Rb lamp. --  <https://www.lloyd.aero> Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero <mailto://br.

[time-nuts] Thunderbolt power requirements

nyone know the -12V current requirement of the T-bolt off their heads? (Yes, I know, I can take everything apart and stick an ammeter in series with each leg but if someone knows, I can avoid having to do that. Yes, I am being lazy.) Thanks in advance. -- Brian Lloyd 706 Flightline Spring Branch

Re: [time-nuts] Simple GPSDO Multiple Outputs - buffered line driver options?

ttps://tapr.org/?product=tadd-3-pulse-per-second-distribution-amplifier TAPR TADD-1 for 10MHz distribution https://tapr.org/?product=tadd-1-rf-distribution-amplifier There are better solutions but these have a good cost:performance ratio. --  <https://www.lloyd.aero> Brian Lloyd 706 Flightl

Re: [time-nuts] thunerbolt, 2 problems

uts of that chip so the 1pps is lost somewhere else. Does anyone have a schematic that I can use to trace back the 1pps? > On Thu, 16 Jan 2020 20:44:43 -0600, Brian Lloyd wrote: > > >After quite some time I dragged out my Tbolt and fired it up. Comes up > >OK. Lady Heather is happy.

[time-nuts] thunerbolt, 2 problems

the Thunderbolt-E but not the original thunderbolt. Not sure it will do the right thing. Does anyone have an older copy of the program for configuring the T-bolt? Thanks in advance. --  <https://www.lloyd.aero> Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero <ma

Re: [time-nuts] Chinese NTP Time server

well enough for that. Also, the only device I have to DO the comparison is a Fluke T7260a. Thinking about a TICC. Advice? Brian, WB5BL --  <https://www.lloyd.aero> Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero <mailto://br...@lloyd.aero> +1.

Re: [time-nuts] Chinese NTP Time server

hat they did spend some effort trying to quiet down the noise at the power input. And here I was worried what my next crazy project would be. > Heh. > George, N2FGX > > On 12/22/2019 12:49, Brian Lloyd wrote: > > > > On 11/26/19 09:28, x...@darksmile.net wrote: > >> Hel

Re: [time-nuts] Chinese NTP Time server

itely on the right track. I need 7.5V out (if it tracked the input that would be perfect) and the pinout is different, i.e. the NTP server has a pinout of gnd, in, out, gnd, respectively. But you definitely found something in the ballpark. Thanks! --  <https://www.lloyd.aero> Brian Llo

Re: [time-nuts] Chinese NTP Time server

On Mon, Dec 23, 2019 at 9:42 AM Brian Lloyd wrote: > > > On 12/22/19 17:16, Adrian Godwin wrote: > > Voltage converter might be one of these : > > > > https://www.we-online.com/catalog/datasheet/177920521.pdf > > > > You can also sometimes find a si

Re: [time-nuts] Chinese NTP Time server

sure someone here has some ideas about getting this to work. Thanks in advance for humoring me. --  <https://www.lloyd.aero> Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero <mailto://br...@lloyd.aero> +1.210.802.8359

Re: [time-nuts] Spark timer.

of motion. Now we just have fast cameras or direct measurement of acceleration and velocity. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY (1.210.802-8359) ___ time-nuts mailing list -- time-nuts@lists.feb

Re: [time-nuts] Talking Clock

ts audio synchronized, and have the voice mixed over the top. So long as the voice message completes before the time mark, everything is fine. That would allow the simple time pulse to be synchronous and the voice to be asynchronous. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd

Re: [time-nuts] Bombe clock

he $100 nixie tube clock board they are using to drive the displays. I have the same board with the same features on my nixie tube clocks. I like setting the LEDs for that cool purple glow that the old gas VR tubes exhibited. 0A2 anyone? > > Jean-Louis F6AGR -- Brian Lloyd 706 Flightline

Re: [time-nuts] Bombe clock

dicate the time instead of nixie tubes, which didn't exist back then. Hmmm, a GPS receiver, an arduino, 6 stepper motors ... The craftsmanship is nice. The price, not so much. ;-) -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 +1.210.802.8359 __

Re: [time-nuts] Li Ion Battery for HP 5065A

ennopower.com/collections/12v-series-lifepo4-batteries/products/12v-8ah-lfp-battery-abs-sealed-black-case -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 +1.210.802.8359 ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe

Re: [time-nuts] Li Ion Battery for HP 5065A

en 4800 to 5200 mA, I am convinced > that I found in the US a very viable source. No commercial or any other > interest, now my only problem is how to get rid of the other junk. https://bioennopower.com/ I use their LiFePO4 batteries to build packs for lots of different kit. -- Brian Lloyd 70

Re: [time-nuts] simple phase finder

y? I'm going to be really busy starting next week > for a month commissioning a satellite launching next week, so this > weekend is my last opportunity to fool with actual technology. > DX Engineering or MFJ. You might find that HRO has one or the other in stock. Don't they have a store in Las Ve

Re: [time-nuts] OCXO info

; A check into the Federal Supply System indicates that that model > oscillator was an alternate for the venerable 10544 and 10811 oscillators, > so pinouts should be the same as those models. > Thank you. > Cheers, > Dave M > > > > > > - Original Message -

[time-nuts] OCXO info

for the buffer board? 3. Does anyone have a 15-pin card-edge connector for the buffer board? My plan is to turn it into a GPSDO. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY (1.210.802-8359) ___ time-nuts

Re: [time-nuts] Lots of Off Topic discussion

I also consider the discussion of GPS jamming to be relevant because, for people who DO want/need time-nuts accuracy, GPS is far and away the most convenient reference. Knowing how it might fail is useful. YMMV. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY

Re: [time-nuts] WWV and legal issues

e overall network. > Yeah, I have some experience with running a large net. I have a little experience with how the Internet runs. ;-) -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY (1.210.802-8359) ___ tim

Re: [time-nuts] Setting Time on WSPR Radio Transmitter

gnal and then uses an SSB transceiver to upconvert to the desired output frequency. Even worst-case the standard NTP implementation on Windows is more than sufficient for synchronization. -- Brian Lloyd 706 Flightline Spring Branch, TX 78070 br...@lloyd.aero +1.210.802-8FLY (1.210.802-8359) __