James Browning wrote: > On Sep 17, 10:52 pm, "David J Taylor" <[email protected] > this-part.nor-this.co.uk.invalid> wrote: >> Don't worry about trees - a modern GPS such as the GPS 18x LVC is very >> sensitive, and can work with a lot of obscuration. Although my GPS 18 LVC >> is sitting on the roof, the GPS 18x LVC works just as well sitting in a >> room on the top floor of the house. > > I have a SiRF star III based USB dongle (US GlobalSat BU-353)</plug> > that I got a location off of in a basement room about 6 feet from the > window. currently it's attached to box whos' ntpd crashes every time > I > mention it. I think it's talking in the binary mode and the kernel > device > is tuck at the wrong speed. (I probably just need to restart it.)
You can check with minicom or similar as to output. I used Telix from DOS with my BR304 to set to just give a single RMC sentence per second output. The codes needed to switch modes were in the br304 manual I downloaded. Having said that the br304 is now in pieces to be explored with scope probe in case it's possible to locate any signal usable for ntp. Best I had was +/- 0.5 sec but it is much less sensitive than the Garmin GPS18x-LVC that early in year maintained an offset within 4us (that's until sats in view reduced by tree growth so it became unusable). <http://support.ntp.org/bin/view/Support/InexpensiveOemGps#Globalsat_BR_355_BU_353_and_othe> David _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
