The last idea was to use commercial broadcast transmitters. No license required.
Possibly all of the stations within some band. It turns out that if their frequency is drifting or if they have phase noise does not matter as long as all the telescopes can "hear" the same set of transmitters. So each telescope records about 100 MHz of RF bandwidth and uses this as a "time code" track. All you need to "sync" multiple locations is a fast broadband RF front end, A/D chip and a hard drive. Post processing involves quite a lot of number crunching but computing is cheap and it need not be done in real time. That said, GPS might be cheaper because they are mass produced on single chips but you don't need GPS if you have any strong transmitter(S) that all telescopes can "hear" On Thu, May 5, 2016 at 2:18 AM, Heinz Breuer <[email protected]> wrote: > Hello, > sorry I am late. > As I understood a transmitter was not considered as there is no ham > licence. I don't know in which country this will be used. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
