so...I put a Time Server in my HomeLab

Just wait until he starts synchronizing his coffee breaks with atomic clocks

My second role beside IT role is Time center techinican,im so happy that someone talk about how much time measuring is mindblowing.

Small correction, crystals don't inherently vibrate at that frequency, crystals are just "electromechanical" clocks, their cut and size and mass determines the frequency, which is very stable, and they can be tuned to extreme accuracy and with electronics, that accuracy and stability can be turned into very good clocks and other frequency references. :) 32768hz was chosen because you can divide it in many ways by 2^n, so binary counting systems can keep track of a second by measuring 2^n ticks of that clock. :)

The USAF spent a week explaining Rubidium and Cesium clocks to me but this was way more fun. Watching you realize that your antenna needed to be outside or in clear view of the sky was pretty funny. Good stuff Chuck.

Get NordVPN 2Y plan + 4 months extra plus up to 20 GB Saily data voucher ➼ https://nordvpn.com/networkchuck It’s risk-free with Nord’s 30-day money-back guarantee! In this video, I install a high-precision time server in my studio using the OpenTimeCard Mini from TimeBeat. Instead of relying on external Network Time Protocol (NTP) servers, I’m hosting my own time server to achieve nanosecond-level accuracy using Precision Time Protocol (PTP). The OpenTimeCard Mini combines a GPS module that receives signals from satellites equipped with atomic clocks and a Raspberry Pi Compute Module 4 (CM4) acting as the server. This setup allows me to synchronize all the clocks on my network with unprecedented precision. Additional Information: If you’re intrigued by the fascinating world of time synchronization and want to delve deeper, here are some interesting insights and resources: • The Precision of Quartz Clocks: Modern quartz crystal oscillators are remarkably accurate, typically drifting about 15 seconds per month. While factors like temperature and aging can affect them, advancements have significantly minimized these deviations. • The Birth of Atomic Clocks: The first practical atomic clock was developed in 1955 by Louis Essen at the National Physical Laboratory in the UK. By 1967, the second was redefined based on the vibrations of cesium atoms, marking a significant leap in timekeeping accuracy. • GPS Satellites and Timekeeping: The Global Positioning System (GPS) began with the launch of its first satellite in 1978. These satellites carry atomic clocks that provide precise time signals, revolutionizing navigation and global time synchronization. • Understanding NTP Synchronization: The Network Time Protocol (NTP) dynamically adjusts its synchronization intervals, typically ranging from 64 to 1,024 seconds, to maintain accurate time across devices connected to the internet. • Time Zones and Global Standardization: The concept of standardized time zones was proposed by Sir Sandford Fleming in 1879. The 1884 International Meridian Conference endorsed these time zones, paving the way for the global timekeeping system we use today. • Hardware Timestamping in Networking: Hardware timestamping captures the exact moment a network packet is sent or received, allowing for nanosecond-level precision. This is essential for applications requiring extremely accurate time synchronization, like PTP. • Raspberry Pi and Hardware Timestamping: While the Raspberry Pi Compute Module 4 (CM4) allows for hardware timestamping through additional network interfaces, the standard Raspberry Pi 4 does not support this feature on its built-in Ethernet port. The new Raspberry Pi 5 introduces hardware timestamping support directly on its Ethernet interface. • Why Nanosecond Accuracy Matters: Industries such as financial trading, where transactions happen in fractions of a second, rely heavily on precise time synchronization. Broadcasting and aerospace also require this level of accuracy to ensure seamless operations. Further Reading and Resources: • TimeBeat’s OpenTimeCard Mini: https://store.timebeat.app/products/open-timecard-mini • TimeBeat Software: https://www.timebeat.app/solutions/ • Understanding Precision Time Protocol (PTP): https://www.timebeat.app/blog/sync-showdown-ntp-vs-ptp-vs-tsn-vs-ethercat • History of Timekeeping: https://www.timebeat.app/blog/timekeeping-history-and-technology • Quartz Crystal Oscillators Explained: https://www.timebeat.app/blog/quartz-crystal-oscillators • Atomic Clocks and GPS Technology: https://www.timebeat.app/blog/atomic-clocks-gps-timing • Raspberry Pi Hardware Capabilities: https://www.timebeat.app/raspberry-pi-hardware-capabilities • Network Time Protocol (NTP) Details: https://www.timebeat.app/blog/sync-showdown-ntp-vs-ptp • Global Standard Time Zones: https://www.timebeat.app/blog/global-time-zones 🔥🔥Join the NetworkChuck Academy!: https://ntck.co/NCAcademy **Sponsored by NordVPN

GPS antennae are active in that they have an amplifier built-in. They're powered by a dc bias voltage from the GPS board. Also, the GPS frequencies (GHz region) have a very high attenuation per meter of cable. Antennae height is irrelevant, they must have a clear view of the sky, the greater the better. Trees are bad. Clouds are bad. I used an OEM GPS uBlox module some 20 years ago for timing purposes. Cool stuff.

I'm getting my R.Pi tomorrow, cant wait to test it.

Time sync is also super important for live TV broadcast as well.

0:12 that makes so much sense (nano Second acuraccy??!?!? that like 0.000000001 seconds)

You didnt know about PTP???? wow... a little BEHIND THE TIMES!!!! ...thank you, i'm here all evening.