------ Original Message ------ >Received: Sat, 15 Dec 2007 05:53:00 PM PST >From: "Ronald Held" <[EMAIL PROTECTED]> >To: [email protected] >Subject: Re: [time-nuts] time-nuts Digest, Vol 41, Issue 56 > >My apartment is in a reinforced concrete building, not near the roof. >Many years ago I tried a Garmin handheld and could not get a lock. >Recently, I tried a GPS watch near the window, and could not get e >lock, even though it did lock up outside(cold) after a few minutes. >that is why i do not think I can use a GPS disciplining option. > Since my unit already gets no worse than 1 millisecond when locked >up, i would want no worse than 1 microsecond in phase over long >periods of time. What non GPS options are there with the electronic >building skills I do not have? > Does a cell phone work in your apartment? If so, you might consider an oscillator that gets its frequency discipline indirectly: GPS receiver disciplines oscillator at cell phone tower, then CDMA cell phone network disciplines oscillator in your apartment.
See <http://www.endruntechnologies.com/frequency-standard-lowcost.htm> for an example. James Maynard, K7KK Salem, Oregon, USA _______________________________________________ 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.
