Am So 6. Juli 2008 schrieb Harald Koenig: > On Jul 06, Marcus Bauer wrote: > > > On Sun, 2008-07-06 at 19:17 +0200, Bernhard Höll wrote: > > > Hi, > > > > > > unfortunately I still get no GPS data. I went for a 25 minute trip on a > > > plain field, so GPS reception should be no prob. . > > > > My Freerunner needs ~5 minutes before it has the time (tangoGPS displays > > the time of the GPS even if there is no fix) and ~10-15 minutes overall > > before it gets a fix. If I move, even just walking or have the Neo not > > in an upright position, I don't get a fix at all. Clear skyview of 80% > > sky is necessary for my FR too. > > > > > > > When connecting via 'nc' to the gpsd I get output > > > " > > > GPSD,R=1 > > > $GPRMC,,V,,,,,,,,,,N*53 > > > $GPVTG,,,,,,,,,N*30 > > > $GPGGA,,,,,,0,00,99.99,,,,,,*48 > > > $GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30 > > > $GPGSV,1,1,00*79 > > > $GPGLL,,,,,,V,N*64 > > > $GPZDA,,,,,00,00*48 > > > $GPRMC,,V,,,,,,,,,,N*53 > > > ... > > > " > > > > The above log data means that the GPS chip has just no clue about its > > whereabouts. > > check this mail thread for details: > > http://lists.openmoko.org/pipermail/hardware/2008-April/000055.html > > this explains that there is a problem with the internal antenna. > the gps receiver detects a shortage and disables the antenna :-( > > same problem with my new gta02 :-(
I don't understand Andy's findings that way. Seems more like GPS-receiver can't even switch off antenna at all. The whole story about Vcont is just switching between internal and ext. ant., and is done by a separate chip (UPG2012TB). No way to switch ant. off for ublox-receiver /j
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