davidlutton.bsky.social
davidlutton.bsky.social
@davidlutton.bsky.social
April 1, 2025 at 2:46 PM
There was an assumption in the GPS spec, that counter with max of 1024 weeks from Epoch was sufficient
It's rolled over twice since GPS started operating

Depending on how old the receiver/firmware is, they are some multiple of ~19.6 years incorrect

en.wikipedia.org/wiki/GPS_wee...
GPS week number rollover - Wikipedia
en.wikipedia.org
January 31, 2025 at 11:22 PM
They were made into a product And in 2017 end of life
www.jrmiller.online/projects/min...
They are good units, but there unlocked/free running behaviour has no correction hold and wanders around
Simple GPS Stabilised 10 MHz Oscillator
www.jrmiller.online
January 24, 2025 at 8:02 PM