Re: [Discuss-gnuradio] Measuring performance of module

2015-06-12 Thread Marcus Müller
Have a look at the performance counters, and especially the graphical monitor, gr-perf-monitorx. It does quite exactly what you describe. Best regards, Marcus On 06/12/2015 05:01 AM, Jeon wrote: My OOT module seems to be almost done in implementation. I am wondering that which and how

[Discuss-gnuradio] undefined symbol: _ZNK7QwtPlot5printEP8QPainterRK5QRectRK18QwtPlotPrintFilter

2015-06-12 Thread John Murphy
Hello, New machine with new Kubuntu 15 install, new build-gnuradio install on that system. Had some install issues with a prereq lib that required a force-overwrite to a deb archive. But seemed to progress normally after that was fixed. Also had a warning regarding a missing libzmqt(?) dev

[Discuss-gnuradio] ADSB receiver?

2015-06-12 Thread numeric
Hi, I have gnuradio version v3.7.7.1 installed using pybombs. Installation was successful. I also installed gr-air-modes from the app store. Although the recipe installed with no problem, I cannot find how to use gr-air-modes. No GRC flow graph component found and all documentation, so far, is

Re: [Discuss-gnuradio] ADSB receiver?

2015-06-12 Thread Ralph A. Schmid, dk5ras
Hi, You enter on the command line ais_rx - then the program starts. Ralph. -Original Message- From: discuss-gnuradio-bounces+ralph=schmid@gnu.org [mailto:discuss-gnuradio-bounces+ralph=schmid@gnu.org] On Behalf Of numeric Sent: Saturday, June 13, 2015 05:15 To:

Re: [Discuss-gnuradio] undefined symbol: _ZNK7QwtPlot5printEP8QPainterRK5QRectRK18QwtPlotPrintFilter

2015-06-12 Thread Murphy, John
Not sure which prereq lib it was anymore - it was a couple days ago and I thought I had gone past the problem. I could guess it was something libqwt5 maybe? And it was a case of a failure to overwrite the deb archive of which there a ton of examples on the web, almost always resolved using the

[Discuss-gnuradio] SOCIS project update 2

2015-06-12 Thread Johannes Demel
Hey GNU Radio'ers! Another week has passed. Thus, it's time for my next project update. The week started with a fairly good event. I found a bug in the decoder which led to incorrect results. I studied various papers and algorithms for decoding performance improvements. Especially Successive

Re: [Discuss-gnuradio] terminate called after throwing an instance of 'std::invalid_argument'

2015-06-12 Thread Tom Rondeau
On Fri, Jun 12, 2015 at 1:32 AM, shaunwang shaunwangford...@gmail.com wrote: Hello Everyone When I run AM radio GRC, I got this error terminate called after throwing an instance of 'std::invalid_argument' what(): buffer_add_reader: nzero_preload must be = 0 I google this error, and it

Re: [Discuss-gnuradio] undefined symbol: _ZNK7QwtPlot5printEP8QPainterRK5QRectRK18QwtPlotPrintFilter

2015-06-12 Thread Tom Rondeau
On Fri, Jun 12, 2015 at 7:58 AM, John Murphy mr.john.joseph.mur...@gmail.com wrote: Hello, New machine with new Kubuntu 15 install, new build-gnuradio install on that system. Had some install issues with a prereq lib that required a force-overwrite to a deb archive. But seemed to progress

Re: [Discuss-gnuradio] terminate called after throwing an instance of 'std::invalid_argument'

2015-06-12 Thread shaunwang
Thank you so much. Tom Could you please tell me what a typical value in tabs is? -- View this message in context: http://gnuradio.4.n7.nabble.com/terminate-called-after-throwing-an-instance-of-std-invalid-argument-tp54156p54164.html Sent from the GnuRadio mailing list archive at Nabble.com.

Re: [Discuss-gnuradio] terminate called after throwing an instance of 'std::invalid_argument'

2015-06-12 Thread Marcus Müller
Dear Shaunwag, that depens on the bandwidth you want to let through your filter, but typically, use something like firdes.low_pass(1.0, samp_rate, 25e3, 25e3) which will build a tap vector for you; the arguments (in this order) are: 1. gain in passband 2. sampling rate 3. cutoff frequency of

Re: [Discuss-gnuradio] SOCIS project update 2

2015-06-12 Thread Martin Braun
On 12.06.2015 09:36, Johannes Demel wrote: channel construction code. First of all, BEC channels can be calculated efficiently, but I don't consider them to be interesting for GNU Radio. Let me know if you have a different opinion on this. And why. I consider BSC as the most interesting case.

Re: [Discuss-gnuradio] Measuring performance of module

2015-06-12 Thread Tom Rondeau
On Fri, Jun 12, 2015 at 2:24 AM, Marcus Müller marcus.muel...@ettus.com wrote: Have a look at the performance counters, and especially the graphical monitor, gr-perf-monitorx. It does quite exactly what you describe. Best regards, Marcus Here's a paper that I wrote on it:

Re: [Discuss-gnuradio] Install GNURadio from Source

2015-06-12 Thread Tom Rondeau
On Thu, Jun 11, 2015 at 4:24 PM, Richard Bell richard.be...@gmail.com wrote: Thanks Tom I understand now. Everything is working again. One more question about the tags. When I install Master - HEAD, the version in GRC (from help-about) is 3.7.7.1. Why is there a tag for version 3.7.8 in the

Re: [Discuss-gnuradio] Fwd: Problem using fm_demod.py

2015-06-12 Thread Tom Rondeau
On Thu, Jun 11, 2015 at 7:17 PM, Nick Harrison hnick...@gmail.com wrote: Hi everyone, I recently started playing around with gnuradio, and being the beginner that I am, wanted to begin by listening to a close by radio station. I basically followed the instructions on