Well, this may seem like a dumb question to some of you, but, it does have me baffled a little. I have noticed some time ago that the time indicated on my cell phone is usually two to four seconds ahead of GPS time. I was under the impressions that most towers did use GPS time. Anyway, I wrote it off to thinking that the phone is free running unless connected to a call and hence the drift. I even tried this theory by dialing my cell phone from my land line, and low and behold, the times matched with GPS as long as I was connected. Soon as I disconnected it was immediately off 4 seconds and eventually settled at about 2 seconds. Since there is a signal indicator on the cell phone that is active all of the time, it is obviously receiving something from a local tower. Could that signal not have GPS time embedded in it? It must have some, since going from one time zone to the other switches the cell phone time automatically, but obviously not accurately. It seems like a 2 second window is pretty large to search to make all of those bits line up so one can talk, or to even have the phone ring. Thanks for any help in making me understand this small dilemma. Regards - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 _______________________________________________ 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.
