James Lux wrote: > Ah.. That's easy.. Pretty much every satellite in orbit derives its transmit > frequency from a crystal oscillator, either a TCXO or a OCXO. So all you > have to do is pick a LEO satellite that is easy to receive and measure the > transmitted frequency, and that is at a frequency where other effects won't > dominate (ionospheric uncertainties, for instance, probably rule out VHF and > UHF downlinks).
Hi James, that's easy for you at Nasa! You have rotary antennas, good receivers and so on... I thought to GPS sats because there are cheap receivers all around, and hoped the 1 PPS would tell something, so freeing me from considering doppler, relativity etc. Anyway, please let me know if you find any easily detectable signals that doesn't require a tracking antenna. Bye, Antonio I8IOV _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
