Sorry but this sounds like nostalgia. loran-c was prone to error. Yes, we can stop that with modern tech, but the problem with loran-c is you had location ambi

Sorry but this sounds like nostalgia. loran-c was prone to error. Yes, we can stop that with modern tech, but the problem with loran-c is you had location ambiguities. Decca was worse, unless you had a good initial fix, you were all sorts of fucked. There are of course modern alternatives, but they are not block proof, or turned on. There is a very good reason why GPS was opened up, because the alternatives were not anywhere near as good. Now, what are the alternatives? well hyperbolic navigation is still a thing, and with modern electronics you can get a pretty good fix without any of the nasty ambiguaty that loran-c had. If you are flying over land, then visual odometry is now at a point where you can locate pretty accurately autonomously (assuming cloud cover is your firend) Small low power ceasium clocks are $4k now, and only really need a few hundred millitwatts to run, which opens up a whole load of other ways to navigate. then there are IMUs, they are dirt cheap and way more accurate than 20 years ago. A calibrated array should be able to sustain reasonable accuracy after 30 minutes now