[aprssig] Garmin GPS35
Andrew Rich vk4tec at tech-software.netWed Sep 28 18:12:26 UTC 2005
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It seesm to know what date it is it looks like a GPS aquiring sats leave it for abit On Wednesday 28 September 2005 22:27, VE7GDH wrote: > Stan N0YXV wrote on Sept 27 2005 > > > Here is an output from one of my sessions. > > > > $GPGGA,001446,0000.0000,N,00000.0000,W,0,00,,,M,,M,,*48 > > $GPRMC,001448,V,0000.0000,N,00000.0000,W,000.0,000.0,280905,007.2,W,N*09 > > What is powering the GPS35? Is the supply voltage within spec? I > would presume that because it at least outputting NMEA that it isn't > a power supply problem, but... ? > > The nitty-gritty is that your GPS doesn't have a valid position. The "V" in > the $GPRMC sentence tells you this. The "00" after the longitude in the > $GPGGA sentence tells you that it sees zero satellites. Could the GPS "see > the sky" when you captured this data from the GPS? If it could see a > substantial portion of the sky, you probably have an internal problem with > the GPS... i.e. it could be broken. If it really isn't functional, you could > use it for a paper weight or take it apart and see if it could be fixed, but > it would be somewhat unlikely that you would see any visual clues inside. > However, if it just isn't working, you don't have anything to lose. > > I don't know if you would learn more from the $GPGSV sentence, but > your GPS35 doesn't seem to be outputting that sentence. > > I'm sure there are lots of sites that help interpret NMEA sentences, but > I did a search and came across this one: > http://home.mira.net/~gnb/gps/nmea.html#gpgga > > 73 es cul - Keith VE7GDH > -- > "I may be lost, but I know exactly where I am!" > > > _______________________________________________ > aprssig mailing list > aprssig at lists.tapr.org > https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig > > > -- ------------------------------------ Andrew Rich VK4TEC Satellite Ground Station for PCSAT2 www.tech-software.net vk4tec at tech-software.net
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