The 1PPS output looks clean on the scope. This little module is designed for a drone but works well in this application. It comes with a cheap little antenna, which actually worked sitting inside on my desktop while I was configuring the software.
For this install, I opted for the cheaper GPS receiver, the GT-U7 (not an affiliate link) from Amazon for $10.99. Then followed along with the instructions. The time accuracy for a Stratum 1 server is 10 microseconds.įirst, I wiped my SD card and loaded a fresh install of Raspberry pi OS. Stratum 2 servers are connected to Stratum 1 servers and so on. Stratum 1 servers are connected to Stratum 0 servers. Since GPS satellites have atomic clocks, that makes them a Stratum 0 server. While a Raspberry pi is a hobbyist toy, the same setup can be done with a more serious computer to create a solid NTP server for a facility or LAN.Ī little about NTP time servers Stratum 0 server is directly connected to an atomic clock. I thought to myself damn that sounds interesting. While searching online for GPS time sever, I came across this post where Austin built a Stratum 1 level time sever with a Raspberry pi and an inexpensive GPS receiver. Some equipment does not and relies on NTP to keep things in sync. Some equipment has 10 MHz or 1PPS inputs. More often, digital transmission methods require precise timing to prevent jitter and dropouts. If there is too much time differential, the codec will unlock. We are running into more situations where timing is important, especially when audio and video codecs are concerned. This is an important question these days.
Bill Frahm on WKIP removal of the taller tower.
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