[time-nuts] Re: GPS failed

> I'd like to get some opinions and war stories regarding GPS reliability at > high RF level and elevation locations. At last count I’ve got ten GPS/GNSS active antennas scattered around the house (I have a very understanding spousal unit), including one in the kitchen skylight and one

[time-nuts] Re: Clock display on Linux systems?

> In this application RPis seem to last for many years - in others where we > use the SD-card (e.g. influxdb or similar) they seem to regularly fail in > 1-2 years, requiring an reformat or new SD-card. An RPi or similar with a > more robust SSD/M2 drive would be good. I’ve had the same

[time-nuts] Re: Clock display on Linux systems?

I have four home-built clocks, each using a Raspberry Pi, all with slightly different designs, all running gpsd and ntpd (so all are NTP servers on my home network). Three are GPS disciplined; one is WWVB disciplined. Two of the GPS clocks use the modem-control lines on a serial port for the

Re: [time-nuts] World's most precise.... wall clock

I’ve built several small home-brew NTP servers using a Raspberry Pi, a GPS receiver, and an LCD display. Most of them are desk clocks. My favorite one (and the biggest money sink) is a mantle clock in my living room that incorporates a chip-scale cesium “atomic clock”. Photo:

[time-nuts] small multi-timezone display

I’d investigate whether there was an Android “World Clock” app whose display had your requirements, then buy an Android tablet in your price range and with the appropriate form factor. (I like the “World Clock” app on my iPhone, but I’ve never encountered a cheap iPhone.) -- J. L. Sloan

Re: [time-nuts] New Member GPS NMEATime Trouble

TG9AJR Juan Munoz mailto:tg9...@gmail.com>> writes: > But I tried the GlobalSat and cause issues with NMEATime that will Not > Responding and had to End Task. I did unplugged the U-BLOX from the PC and > put the GlobalSat instead. I’ve never used any of these devices on Windows - all my GNSS work

[time-nuts] Hobbyist and prototyping boards with U-blox ZED-F9P

Folks: I’ve been doing a lot of SW work using the U-blox ZED-F9P chip over the past few months. Being a SW guy, I try to minimize the amount of breadboarding and HW integration I have to do. For several months most of my work has been using the SimpleRTK2B board from Ardusimple in Barcelona

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

even more. https://coverclock.blogspot.com/2018/06/wibbley-wobbley-timey-wimey.html :John Sloan ___ 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 fo

Re: [time-nuts] Lost GPS lock or 1PPS recently?

Folks: Well blow me down. It took some Google Maps fu on the web on my part, but my time and place does indeed coincide with this “GPS Interference Testing” at White Sands Missile Range. I just happened to be in my home office watching several of my GPS-disciplined NTP servers when this

[time-nuts] Lost GPS lock or 1PPS recently?

Folks: GPS jamming and spoofing isn't really my area of expertise, but it's something I worry about, not just for its impact on geolocation and navigation applications, but also because GPS has become critical as a high precision timing reference in the telecommunications realm, which *is* my

[time-nuts] NIST Tour and Time & Frequency Seminar

This summer, somewhat coincidentally, I got to take a tour of some of the NIST Time and Frequency Division, rode my motorcycle up to Fort Collins to see the WWVB antennas, and attended the NIST 43rd Annual Time & Frequency Seminar. I wrote a couple of blog articles with my notes and