People,
On 2010-11-04 04:49, Philip Rhoades wrote: > People, > > > On 2010-11-04 04:17, Philip Rhoades wrote: >> Mariusz, Nikolaus, Sebastian, >> >> Thanks for the fast responses! >> >> See inline responses: >> >> >> On 2010-11-04 03:27, Dr. H. Nikolaus Schaller wrote: >>> >>> Am 03.11.2010 um 17:08 schrieb Philip Rhoades: >>> >>>> People, >>>> >>>> I wanted to start using the GPS facilities on my FreeRunner but there is >>>> a Catch 22 situation: >>>> >>>> - If I am inside, there is too much concrete to get GPS signals >>>> >>>> - If I am outside, I don't have a connection to download maps >>>> >>>> I thought if I could get an external GPS antenna connected and lead it >>>> outside to my balcony, I could get GPS reception while I was still >>>> inside (it is not always convenient to go out to the balcony and use >>>> WiFi). I assumed (!) the little antenna connection on the top right >>>> edge of the freerunner was for a GPS antenna but when I went to buy one >>>> the guy told me the connection is for a 3G antenna . . if I look at: >>>> >>>> http://wiki.openmoko.org/wiki/Neo_FreeRunner_GTA02_Hardware#GPS_Antenna_Performance >>>> >>>> it seems to suggest that there IS an external connector for GPS? >>>> >>>> Can someone clarify? >>> >>> The guy is definitively wrong. The Freerunner doesn't support 3G... >>> >>> There is a connector for an external GSM antenna just near one >>> of the two Torx screws. You can see it when you open the battery cover. >>> >>> The golden connector is a "MMCX" type and provides approx. 3V 15mA for >>> an external antenna. >>> >>> I am using a Navilock antenna similar to this one (sorry, it is in German): >>> >>> >>> http://www.ddcom24.de/shop/artikel_artikel_8556_name_Navilock-GPS-Zusatzantenne-NL-70ATW-MMCX-90%B0-gewinkelt.html >>> >>> Please make sure you get a MMCX (and not a MCX) connector. >> >> >> Right. >> >> >>> For the GPS performance tests we do, I simply place the Freerunner >>> on a window board so that it looks upright and the upper part of >>> the Freerunner looks outside. You may have to use one or two >>> books (e.g. Shakespeare complete edition...). >> >> >> My balcony windows face more residential blocks - in the past I have had >> to go out on the balcony and put the FR near the railing to get anything . . >> >> >>> This is not optimal for satellite reception with the built-in antenna, >>> but much better than inside a room. With that setup you usually get a fix >>> within 2 minutes (sometimes it may take 15 minutes since the >>> receiver can only see less than half of the sky and there may not be >>> enough visible satllites). >>> >>> After getting a fix, the receiver is sensitive enough to track even inside >>> a room. >> >> >> I am hoping that I can get an antenna connection and connect it to a >> wire going outside? >> >> >>> Finally, you can download the important maps off-line onto a SD card. >> >> >> I now have 611 dirs and files under ~/Maps but I have tried all the zoom >> levels and tried dragging around on the screen but I can't get any >> pictures . . Is there a way of (conveniently) setting my long and lat >> and then downloading so that I know the maps I am getting are from my area? > > > I have found out why I can't see any maps - they download but all the > PNG files are zero bytes in size!? I downloaded the map dir from my Fedora desktop - now I can see something! Regards, Phil. -- Philip Rhoades GPO Box 3411 Sydney NSW 2001 Australia E-mail: [email protected] _______________________________________________ devel mailing list [email protected] https://lists.openmoko.org/mailman/listinfo/devel
