SDRTrunk

[rabrol]

Hi Denny.
I'm at work right now, but will do this over the next few days and post via the Google Group.
Thanks for the support!

Rob

Hi Denny.
I've uploaded the log file over at the Google Group.

Ghstwolf62 - yes, I've tried rebooting and then plugging the dongle in without having loaded anything else. Still no joy :-(

No other USB devices plugged in, tried revolving it around all 4 ports, all to no avail.
Hopefully we will get it figured out though. The one time it worked, it looked good!

 

[DSheirer]

I'm glad to hear that!
As you know there is some frequency drift, so do you plan to make something like autotuner (or call it whatever you like) to follow the peak of the frequency, BUT based on the IF input singal as it is much more accurate than what you see on the spectrum no matter how good PPM corection is?

Yes, that's a goal.

 

[Ghstwolf62]

Hi Denny.
I've uploaded the log file over at the Google Group.

Ghstwolf62 - yes, I've tried rebooting and then plugging the dongle in without having loaded anything else. Still no joy :-(

No other USB devices plugged in, tried revolving it around all 4 ports, all to no avail.
Hopefully we will get it figured out though. The one time it worked, it looked good!

Sorry to hear that. I'd hoped it might do for you what it did for me.

Very frustrating in the beginning and actually walked away for a week or two before coming back.

Once I got my stuff sorted it finally worked. Not program's fault I don't think, just computer things.

Its a great program and I love it now that I have it working.

 

[tylerjw]

Hello,

I have a USRP N210 and am able to get IQ samples from it. I notice you have plans for adding support for the B100. How difficult would it be to add support for all USRP tuners through UHD? Also how difficult would it be to just import IQ sample files?

tyler

 

[DSheirer]

How difficult would it be to add support for all USRP tuners through UHD?

Java's JNI lets you interface to native libraries like UHD. But you have to compile UHD for each operating system that sdrtrunk runs on (all OSs with a Java runtime). I ported the RTL drivers for R820T and E4K over to Java so that I didn't have to compile (and maintain) the rtl library on each OS and I can expose the unique options for each tuner without being constrained by the rtl library. I haven't looked at the UHD library, so I'm not sure which route I'll take yet.

Also how difficult would it be to just import IQ sample files?

This might be fairly easy. I can present the file as just another IQ source option and display it as a node on the configuration tree. You could then run any combination of decoders/channels simultaneously against the file.

Denny

 

[tylerjw]

Please let me know if there is anyway I could assist in getting the importing of IQ data working. I am not familiar with Java but would be happy to help in any way. The importing of IQ data would be very useful to me and I can provide sample data files if that would be helpful. The USRP outputs the IQ data as a large array of 32bit floats. It can also output as a stream, would the be a way to easily set the IQ data file to the stdio stream?

I have checked out a copy of your project and am reading through the source now to try to understand it.

Ultimately being able to connect to the USRP as a configurable tuner through your software would be the most useful but getting a file to work seems like it should be much easier and would serve my purpose just as well.

 

[tylerjw]

I got the project to build and have started to attempt to get the file import working. I just have a few questions on how to best do this.

Should File be a separate type of source or should it be a type of tuner?
If it's a separate type of source where should it go in the configuration tree?
Where is the configuration tree in the source code and how can I add to it?

I'm mostly interested in MPT1327. I'm sure I'll have more questions and this will be slow going but I need to get this to work.

 

[tylerjw]

I'm in the process of getting this working. You can check out my changes at https://github.com/tylerjw/sdrtrunk. I've been able to add the node to the tree, however now I'm stuck at trying to figure out how to hook up the file and get it playing.

 

[DSheirer]

I'm in the process of getting this working. You can check out my changes at https://github.com/tylerjw/sdrtrunk. I've been able to add the node to the tree, however now I'm stuck at trying to figure out how to hook up the file and get it playing.

Tyler, I copied your questions/comments over to the sdrtrunk support group and posted a message/response.

https://groups.google.com/forum/#!forum/sdrtrunk

Denny

 

[melbournefan]

Thanks, i can't get it to load instead i get a error
'A Java Exception has occurred'

 

[reconrider8]

noobish question here..... but how do you run this i d/l the file but i dont know what i need to open/start it

 

[DSheirer]

Thanks, i can't get it to load instead i get a error
'A Java Exception has occurred'

Can you post either a screen shot of the error, or a copy/paste of the error report? What operating system are you using (Linux, Windows) and how are you starting the program?

 

[DSheirer]

noobish question here..... but how do you run this i d/l the file but i dont know what i need to open/start it

Download the file and then extract the program files using either 7-zip or a zip-compatible program.

Once extracted, you can start the program using either the run_sdrtrunk_linux or run_sdrtrunk_windows.bat files.

Denny

 

[reconrider8]

yea i click the bat file and see a blip of cmd opening but thats all it just goes away and nothing starts

 

[DSheirer]

yea i click the bat file and see a blip of cmd opening but thats all it just goes away and nothing starts

Try opening a command prompt window, navigate to where you extracted the files, and then type the name of the bat file.

 

[melbournefan]

Can you post either a screen shot of the error, or a copy/paste of the error report? What operating system are you using (Linux, Windows) and how are you starting the program?

Windows 7, And i started it from the Program file that i unzipped

 

[DSheirer]

Windows 7, And i started it from the Program file that i unzipped

Which version of java are you running? You can confirm this by opening a command prompt and type:

java -version

 

[DSheirer]

yea i click the bat file and see a blip of cmd opening but thats all it just goes away and nothing starts

Jay, from the screenshot you posted offline, Windows doesn't recognize Java as an installed program, or it doesn't know where to locate it using the PATH system variable.

1) Install the latest Java 7 or Java 8 software.

2) Confirm that java is installed correctly and Windows knows where to find it by typing in a command prompt:

java - version

3) If you have Java 7 or 8 installed already, you can repair the PATH variable to tell Windows where the java executable is located by following these directions:

PATH and CLASSPATH (The Java™ Tutorials > Essential Classes > The Platform Environment)

Denny

 

[melbournefan]

All fixed.

 

[reconrider8]

got it open now now which towers would i add for this system all of them or just one or the other? Orangeburg (City) Trunking System, Orangeburg, South Carolina - Scanner Frequencies