Hi Bjoern, 1cm RMS is not bad. That would be great to use for Auto Surveying the Antenna position. I meant integrated receivers with 1PPS or 10MHz etc output that are based on Carrier Phase measurement, and are better than an M12M. I know of some GPSDO's that are carrier phase based, and around $8K if I remember correctly. Haven't looked into how to use Carrier Phase to generate more accurate 1PPS pulses, but one thing I remember (maybe incorrectly?) is that one has to get the Ephemeris and Ionospheric delay measurements etc from USNO or NIST(?) or so do to the post processing when doing surveying? As you can see, I am not the expert on Carrier Phase. Do you know of any timing receiver that uses this to generate 1PPS with E-011 accuracy 1s tau? What is involved in using the Carrier Phase info to improve timing accuracy? thanks, bye, Said In a message dated 4/24/2008 07:26:47 Pacific Daylight Time, [EMAIL PROTECTED] writes:
What is affordable for you? For some $330 you can get a L1 GPS receiver outputting carrier phase measurements at 5Hz. This receiver also have a 10MHz tcxo driving the whole receiver. Pseudorange measurement rms of a few dm. Carrierphase rms below 1cm. Btw... the Oncore VP did carrierphase measurements. -- Björn **************Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos. (http://autos.aol.com/used?NCID=aolcmp00300000002851) _______________________________________________ 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.