07-06-2021, 07:24 AM
@Benatti was that trial and error or a calculated size and position of aluminium? From one of the photos I saw recently it appears the GPS antenna has changed between my Brave Heart and whichever later revision was in the picture, which may be a reason some people are having more problems than others with reception. Unfortunately I don't remember where the photo I saw was. Anyone here have experience with antenna design?
@biketool That might be a handy way to get approximate location when you're out of mobile data range and have iffy sky view or luck with sat locations, but it's not an alternative to AGPS. I know some gps systems can get a quicker fix if you prime them with rough time and location, but I don't think this is one of them - at least I didn't see it in the GNSS AT command docs. The AGPS provides an alternate source of almanac and ephemeris data to receiving it uninterrupted and error free from the satellite signal, which can be a problem with our poor antenna.
@biketool That might be a handy way to get approximate location when you're out of mobile data range and have iffy sky view or luck with sat locations, but it's not an alternative to AGPS. I know some gps systems can get a quicker fix if you prime them with rough time and location, but I don't think this is one of them - at least I didn't see it in the GNSS AT command docs. The AGPS provides an alternate source of almanac and ephemeris data to receiving it uninterrupted and error free from the satellite signal, which can be a problem with our poor antenna.
