> I was under the impression from years ago that they were on the way out / being defunded with some kind of decade-long timescale (in favor of GPS). There's a

> I was under the impression from years ago that they were on the way out / being defunded with some kind of decade-long timescale (in favor of GPS). There's actually an effort to get more systems in addition to GPS going, as it is a SPoF. eLoran is one option, and has an advantage of actually being in production in other countries already. There are others. The US DoT published a study in January 2021 (PDF): * https://www.transportation.gov/sites/dot.gov/files/2021-01/FY%2718%20NDAA%20Section%201606%20DOT%20Report%20to%20Congress_Combinedv2_January%202021.pdf https://www.transportation.gov/sites/dot.gov/files/2021-01/F... So I doubt reducing time signals generally is really on the menu.