Re: [Xastir] New user..and thanks..
On 11/18/06, Jeff Mohler <[EMAIL PROTECTED]> wrote: Ive just this moment finished making my first map, discovered that they have to be square in the process. As Curt said... rectangular. If you make an image larger than the screen, you can zoom out view the whole image. This however allows you to zoom into an area of concern with as good of an image as you can get from the original image. Using a small image and zooming in makes it blocky (pixellated). Not sure what to do with timing yet, most of the time we'll have no more than 5 vehicles to track, at Mid Ohio I could have up to 12-15. Just to clarify for everyone, you are not tracking race cars, but the emergency support vehicles. When in action, 30s is far too slow, but I dont see how 5 vehicles could xmit updates every 5 seconds without lots of collisions. If you set up SmartBeaconing to update rapidly when the vehicles are responding, you would be able to keep the dormant response vehilce out of your way on RF because they are not sending position reports. Because SmartBeaconing is activated by movement input, there is no way to avoid collisions. You will want to use the shortest possible packets, and you will want the highest possible precision as well. The 60 foot grid precision won't cut it, you'll need the 2 to 3 foot precision. Here I'll save time ans simply quote Curt: Mic-E: No timestamp and about 60' precision, short packets. Standard APRS: Timestamp and about 60' precision, longer packets. NMEA: Timestamp and precision based on GPS sentence but LONG packets. Base91: Timestamp and 2' precision (assuming GPS puts out good precision), short packets. So, what are you using for trackers? Going to 9600 baud also shortens up the packets, but it limits the available tracker hardware. James VE6SRV ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
[Xastir] Re: FCC/RAC Database
Thanks Curt for the Info. For those of you using Slackware 11.0 the fcc-get file is in /usr/lib/xastir. As you can see from the install I wasn't able to get the RAC Database. Do I need to edit this file? N9JCA Chris Matthews N9JCA-10 Home N9JCA-14 Mobile Semi [EMAIL PROTECTED]:/usr/lib/xastir# ./fcc-get * *** Fetching the FCC database *** * --15:37:57-- ftp://ftp.fcc.gov/pub/Bureaus/Wireless/Databases/uls/complete/l_amat.zip => `l_amat.zip' Resolving ftp.fcc.gov... 192.104.54.3 Connecting to ftp.fcc.gov|192.104.54.3|:21... connected. Logging in as anonymous ... Logged in! ==> SYST ... done.==> PWD ... done. ==> TYPE I ... done. ==> CWD /pub/Bureaus/Wireless/Databases/uls/complete ... done. ==> PASV ... done.==> RETR l_amat.zip ... done. Length: 79,497,156 (76M) (unauthoritative) 100%[==>] 79,497,156 462.41K/sETA 00:00 15:41:13 (396.49 KB/s) - `l_amat.zip' saved [79497156] * *** Filtering/sorting/installing the FCC database *** * * *** Fetching the RAC database *** * --15:41:26-- ftp://ftp.rac.ca/pub/cdncaldb.zip => `cdncaldb.zip' Resolving ftp.rac.ca... 70.52.117.225 Connecting to ftp.rac.ca|70.52.117.225|:21... connected. Logging in as anonymous ... Logged in! ==> SYST ... done.==> PWD ... done. ==> TYPE I ... done. ==> CWD /pub ... done. ==> PASV ... couldn't connect to 192.168.1.10 port 4002: No route to host *** *** Installing the RAC database *** *** unzip: cannot find or open cdncaldb.zip, cdncaldb.zip.zip or cdncaldb.zip.ZIP. mv: cannot stat `AMATEUR.RPT': No such file or directory rm: cannot remove `cdncaldb.zip': No such file or directory * *** Done! *** ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] New user..and thanks..
On Sun, 19 Nov 2006, Tom Russo wrote: > And because of this hassle and the fact that shapelib is so small, it might > be worthwhile for cygwin users who don't plan on using shapelib in other > projects to just go ahead and use the internal one. When I'm done with all > the other things I want to get done today, perhaps I'll update README.win32 > and the wiki page to say just that. Thanks for checking this. It'll make installation on Cygwin that much easier for people. -- Curt, WE7U. archer at eskimo dot com http://www.eskimo.com/~archer Lotto: A tax on people who are bad at math. - unknown Windows: Microsoft's tax on computer illiterates. - WE7U. The world DOES revolve around me: I picked the coordinate system!" ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] New user..and thanks..
On Sun, Nov 19, 2006 at 11:04:33AM -0700, we recorded a bogon-computron collision of the <[EMAIL PROTECTED]> flavor, containing: > On Sat, Nov 18, 2006 at 02:16:41PM -0800, we recorded a bogon-computron > collision of the <[EMAIL PROTECTED]> flavor, containing: > > On Sat, 18 Nov 2006, Jeff Mohler wrote: > > > > > Im trying to add shapelib via the instructions and get this error in 'make > > > lib': > > > > > > /usr/bin/ld -G -h libshp.so.1 -o .libs/libshp.so.1.0.1 shpopen.lo > > > shptree.lo dbfopen.lo -lc > > > dbfopen.lo: In function `DBFReadAttribute': > > > /cygdrive/c/Documents and > > > Settings/jmohler/src/shapelib/shapelib-1.2.10/dbfopen.c:716: undefined > > > reference to `__getreent' > > > /cygdrive/c/Documents and > > > Settings/jmohler/src/shapelib/shapelib-1.2.10/dbfopen.c:724: undefined > > > reference to `__getreent' > > > make: *** [lib] Error 1 > > > > Tom: Does the internal-Shapelib code compile properly on Cygwin, or > > must the same change be made? > > Just confirmed. The internal shapelib code compiles Just Fine on cygwin. > The "__getreent" issues are purely because of the attempt to build the shared > library, which needs to have -lcywin linked in. When using the internal > shapelib, this is not necessary (no explicit linking of -lcygwin instead of > -lc is necessary). And because of this hassle and the fact that shapelib is so small, it might be worthwhile for cygwin users who don't plan on using shapelib in other projects to just go ahead and use the internal one. When I'm done with all the other things I want to get done today, perhaps I'll update README.win32 and the wiki page to say just that. -- Tom RussoKM5VY SAR502 DM64ux http://www.swcp.com/~russo/ Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM "And, isn't sanity really just a one-trick pony anyway? I mean all you get is one trick, rational thinking, but when you're good and crazy, oooh, oooh, oooh, the sky is the limit!" --- The Tick ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] New user..and thanks..
On Sat, Nov 18, 2006 at 02:16:41PM -0800, we recorded a bogon-computron collision of the <[EMAIL PROTECTED]> flavor, containing: > On Sat, 18 Nov 2006, Jeff Mohler wrote: > > > Im trying to add shapelib via the instructions and get this error in 'make > > lib': > > > > /usr/bin/ld -G -h libshp.so.1 -o .libs/libshp.so.1.0.1 shpopen.lo > > shptree.lo dbfopen.lo -lc > > dbfopen.lo: In function `DBFReadAttribute': > > /cygdrive/c/Documents and > > Settings/jmohler/src/shapelib/shapelib-1.2.10/dbfopen.c:716: undefined > > reference to `__getreent' > > /cygdrive/c/Documents and > > Settings/jmohler/src/shapelib/shapelib-1.2.10/dbfopen.c:724: undefined > > reference to `__getreent' > > make: *** [lib] Error 1 > > Tom: Does the internal-Shapelib code compile properly on Cygwin, or > must the same change be made? Just confirmed. The internal shapelib code compiles Just Fine on cygwin. The "__getreent" issues are purely because of the attempt to build the shared library, which needs to have -lcywin linked in. When using the internal shapelib, this is not necessary (no explicit linking of -lcygwin instead of -lc is necessary). -- Tom RussoKM5VY SAR502 DM64ux http://www.swcp.com/~russo/ Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1 http://kevan.org/brain.cgi?DDTNM "And, isn't sanity really just a one-trick pony anyway? I mean all you get is one trick, rational thinking, but when you're good and crazy, oooh, oooh, oooh, the sky is the limit!" --- The Tick ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] New user..and thanks..
On Nov 19, 2006, at 10:51 AM, Curt Mills wrote: Unfortunately I think most of the trackers out there aren't set up to transmit more often than once per minute using timeslotting. I fly opentrackers on balloons with timeslotting and intervals of 20s or 30s. Works just fine. -Jason kg4wsv ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] New user..and thanks..
On Sat, 18 Nov 2006, Jeff Mohler wrote: > Ive just this moment finished making my first map, discovered that > they have to be square in the process. No they don't. They need to be rectangular though for Xastir. If you two georeference points on the map, hopefully as close as possible to two diagonal corners, then Xastir should be happy to display it to you. The reason for getting near the corners is accuracy. > 640x640 fit everything just fine. You can use 1600x1200 if you like. Or bigger. Or some completely different aspect ratio like 100x2000. Doesn't matter. For best accuracy you want it to be in WGS84 or NAD83 datum, and non-projected. > I'll have to play with the options in the opentracker on the sending > side, to see how I can most intelligently deal with near-real-time > updates. When in action, 30s is far too slow, but I dont see how 5 > vehicles could xmit updates every 5 seconds without lots of > collisions. Either set them up for SmartBeaconing with parameters that make then transmit fast enough for you, which will allow them to somewhat randomly change their timing as they go, or set them up for timeslotting. Unfortunately I think most of the trackers out there aren't set up to transmit more often than once per minute using timeslotting. BTW: Some collisions are ok. Don't expect to get every transmission. If you set them up for non-timeslotting as in a regular timed transmission or SmartBeaconing, set them up so that you have a enough free time for all of them to transmit, plus double or triple. You'll get some collisions for each, but you'll get a lot of positions out as well. Hopefully that made some sense. I doubt you're going to get updates every 5 seconds unless you're running only one or two cars. You may be able to get as fast as 2 seconds per transmission, across all the cars, so if you have 10 cars you might be able to get 20 second updates per car. To get each one transmitting in the clear you'd probably require custom mods to the OpenTracker firmware, but Scott would know. If you just have each car transmitting every 20 seconds with fixed-timing (not timeslotting), then you have the chance of collisions and you may not get updates for 40 seconds, or 60, or even longer, from any particular car. Another way to avoid this is to have each car on a separate frequency, then base can have multiple receivers (a separate scanner or radio per frequency) and get all of them in the clear. Xastir can handle that just fine, but you'd need a separate TNC per scanner or radio, as the soundcard driver (AGWPE) would only be able to handle two radios. If you had a system that was capable of handling multiple soundcards, then _perhaps_ AGPWE could be run on each one of them, giving you two radio channels per soundcard. I'm not a Windows guy so I don't know for sure. -- Curt, WE7U. archer at eskimo dot com http://www.eskimo.com/~archer Lotto: A tax on people who are bad at math. - unknown Windows: Microsoft's tax on computer illiterates. - WE7U. The world DOES revolve around me: I picked the coordinate system!" ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] New user..and thanks..
On Sat, 18 Nov 2006, Jeff Mohler wrote: > Ya..that thought hit me at dinner..just have to get a second base radio. ;) Another thought that has been crossing my mind while reading this thread is that if you try to run both the tracking and voice comms on separate VHF frequencies to the cars, you'll end up with desense problems on the voice channel. The VHF frequencies would need to be separated by quite a few megahertz in order for this effect to be reduced or eliminated. I say this because this could become a serious safety issue if the car cannot hear you due to its tracker transmitting often and/or cars near it doing the same. Same for base, if you have cars zipping by near base then the base radio voice frequency may not be able to hear much while any of the trackers nearby are transmitting. The easiest way to get around that is to transmit on a different band entirely, like perhaps using GMRS radios (require $80/five year license), MURS, etc. I experience this desense of my voice rig on 2-meter VHF ham radio (at 146.92 MHz) when my other 2-meter VHF radio on 144.39 MHz decides to send out my position. I use Base-91 compressed transmissions so they are short, but I still can miss one or two syllables on voice during that time. Combine that with 15 or 20 trackers on a small course and the voice frequency might be unusable for you if it's on the same band. -- Curt, WE7U. archer at eskimo dot com http://www.eskimo.com/~archer Lotto: A tax on people who are bad at math. - unknown Windows: Microsoft's tax on computer illiterates. - WE7U. The world DOES revolve around me: I picked the coordinate system!" ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] How to Install FCC es RAC database
Hopefully the Slackware version includes the fcc-get script, which will do all this for you. Bob, N7XY On Nov 19, 2006, at 7:21 AM, N9JCA Chris Matthews wrote: I am using Xastir 1.8.2 which comes with Slackware 11.0,and I am trying to install FCC/RAC Database. I have read the README.MAPS but can't seem to find install instructions. [Must be having a senior moment]. Would someone please direct me as to how to get the database. N9JCA Chris Matthews N9JCA-10 Home N9JCA-14 Mobile Semi ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
Re: [Xastir] How to Install FCC es RAC database
On Sun, 19 Nov 2006, N9JCA Chris Matthews wrote: > I am using Xastir 1.8.2 which comes with Slackware 11.0,and I am trying to > install FCC/RAC Database. I have read the README.MAPS but can't seem to find > install instructions. [Must be having a senior moment]. Would someone please > direct me as to how to get the database. Look in the xastir/scripts directory for "fcc-get". If you have "wget" already installed this script will go get the RAC and FCC databases and install them for you. Do "less fcc-get" and you'll see that you need to run it as root (so that it can install the files once they're downloaded). -- Curt, WE7U. archer at eskimo dot com http://www.eskimo.com/~archer Lotto: A tax on people who are bad at math. - unknown Windows: Microsoft's tax on computer illiterates. - WE7U. The world DOES revolve around me: I picked the coordinate system!" ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
[Xastir] How to Install FCC es RAC database
I am using Xastir 1.8.2 which comes with Slackware 11.0,and I am trying to install FCC/RAC Database. I have read the README.MAPS but can't seem to find install instructions. [Must be having a senior moment]. Would someone please direct me as to how to get the database. N9JCA Chris Matthews N9JCA-10 Home N9JCA-14 Mobile Semi ___ Xastir mailing list Xastir@xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir
