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!? Thanks, 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
