Re: GnuRadio 3.10 - Audio sink under Linux does not support stereo

Gosh, I love the taste of broiled corvid in the morning... I think I found the issue - I had a ~/.gnuradio/config.conf file, that was specifying audio_module=alsa, and so the system couldn't auto-load the pulse module that works. So, I will amend my statement - the ALSA module seems to have

Re: GnuRadio 3.10 - Audio sink under Linux does not support stereo

On 7/4/24 07:11, Gary Schafer wrote: Perhaps if you shared your flowgraph? Gary I've created about the simplest flow graph possible to demonstrate the issue (attached). Here's the output. <<< Welcome to GNU Radio Companion 3.10.9.2 >>> Block paths:     ~/.grc_gnuradio     /usr/share/gn

GnuRadio 3.10 - Audio sink under Linux does not support stereo

I have the packages for GnuRadio from the default Ubuntu Noble repos. I try to create a flow graph with an audio sink with 2 inputs, to do stereo. The flow graph compiles, but when it runs: RuntimeError: check topology failed on audio_alsa_sink(43) using ninputs=2, noutputs=0 Has anybody

Re: Faq? GRC and gnuradio versions don't match?

Thank you! I followed your steps, now I have 3.10.9.2 working! dcherkus@dmin:~$ gnuradio-companion *grc<<< Welcome to GNU Radio Companion 3.10.9.2 >>> I made myself a note to do 'make uninstall' before trying a new version. Regards,Dave

Faq? GRC and gnuradio versions don't match?

Hi, I just built GNUradio from source on Debian 11 x86 64 bit. Even after a reboot, GRC and GNUradio's versions don't match? dcherkus@dmin:~$ gnuradio-config-info --version3.10.9.2dcherkus@dmin:~$ gnuradio-companion --helpusage: gnuradio-companion [-h] [--log {debug,info,warning,error,critical}]

Help on creating an intermittent beacon transmission using HackRF

Hi all: I teach a course at USC on satellite ground communications that is a lab-based class. I would like to setup an intermittent transmission using a recorded beacon that we have used before (in cfile format) to have them practice "catching signals" using lab Spectrum Analyzers and SDRShar

Re: fft beep detection with overlap

Do you know the frequency(ies) of the beep you are looking for? Perhaps a bank of IIR filters at the beep frequencies would be cheaper than an FFT, and is more of a continuous processing so it won't have edge conditions? Or maybe just a simple energy detection, and then do the FFT when you see

Request for Unsuscribe to this dsitribution list

Dear GNURadio administrators, Please, may ask you to kindly unsubscribe my email from this email distribution list? Many thanks and happy Christmas! David Dima

Vector Sink/Source Type Support

in/gr-blocks/lib/vector_sink_impl.cc), so it should be easy enough to add support for more types. Thank you, David

Re: error

Hi all Problem fix. I just re-installed rt set. Ciao David Iw5bnl Il Sab 28 Ott 2023, 18:00 David Martini ha scritto: > Hi all > > I'm getting the following error using rtl-sdr. > >from .osmosdr_python import * > ImportError: libgnuradio-runtime.so.3.10.5: ca

error

Hi all I'm getting the following error using rtl-sdr. from .osmosdr_python import * ImportError: libgnuradio-runtime.so.3.10.5: cannot open shared object file: No such file or directory. Can someone help? I suspect some configuration file is corrupted... Thanks David IW5BNL

Re: Gnuradio Update on ubuntu 20.04 lts

Hi Marcus, I made point 2. Icon now is on the desktop and running ok. Thank you for help and for all great job on gnuradio. Best Regards David Il Mer 19 Lug 2023, 18:08 David Martini ha scritto: > Hi Marcus > > Thanks a lot! > > Best Regards > > David > > Il Me

Re: Gnuradio Update on ubuntu 20.04 lts

Hi Marcus Thanks a lot! Best Regards David Il Mer 19 Lug 2023, 17:41 Marcus Müller ha scritto: > Hi David, > > so, reporting back: fresh installation on a freshly set up Ubuntu 20.04 > does indeed not > install /usr/share/applications/gnuradio-grc.desktop > > Possib

Re: Gnuradio Update on ubuntu 20.04 lts

Hi Marcus Correct this the procedure that I follow. BR David Il Mer 19 Lug 2023, 17:30 Marcus Müller ha scritto: > Hi Volker, > > I believe David is referring to the PPA installation, i.e., > > sudo add-apt-repository ppa:gnuradio/gnuradio-releases > sudo apt-get upd

Re: Gnuradio Update on ubuntu 20.04 lts

Hi Marcus No. Regards David Il Mer 19 Lug 2023, 17:23 Volker Schroer ha scritto: > Did you run cmake with > > -DENABLE_POSTINSTALL=ON ? > > — Volker > > Am 19.07.2023 um 17:16 schrieb David Martini : > >  > Hi Marcus > > Thak you for answer > I don&#

Re: Gnuradio Update on ubuntu 20.04 lts

Not a big deal..but I would like to understand way. Best Regards David Il Mer 19 Lug 2023, 14:32 Marcus Müller ha scritto: > Hi David! > > Thanks for reaching out; couldn't find time to answer you yesterday. > > So, in best engineering manner, let's check a few assu

Gnuradio Update on ubuntu 20.04 lts

Hi all After a routine update of ubuntu 20.04 (gnuradio was also in the list of sw update) the icon of gnuradio disappeared. The gnuradio start properly from terminal. The gnuradio is 3.10.5. Any help? Thanks David Martini

Qt frequency sink

Hi all I upgrade gnuradio from 3.8 to 3.10 on ubuntu 20.04. Everythink is working good except that qt-frequency sink that now is much slower that in 3.8 on same flowchart Also look like to be insensitive to update rate. Someone have same issue? Thanks David Martini Il Gio 27 Apr 2023, 13:30

Qt frequency slow on ubuntu 20.04 and gnuradio 3.10

Hi all, I update the gnuradio from 3.8 to 3.10 on ubuntu 20.04 lts. Everythink is working well except qt frequency sink that now is very slow and not respond to update rate adjustments. Waterflow and other are working fine. Someone have same issue? Thanks Ciao David

Qt frequency sink very slow

Hi all, I update the gnuradio from 3.8 to 3.10 on ubuntu 20.04 lts. Every think is working well except qt frequency sink that now is very slow and not respond to update rate adjustments. Waterflow working fine. Do you have some issue? Ciao David

Re: Galileo Frequency Shifting and Filtering

Hi, Sure, but the power of this kind of signals is below noise level. Current antenna amplifies 30dB but it still not enough to see anything in the spectrum (I have checked it alredy). Regards, David El mié., 1 mar. 2023 7:27, It's a cat escribió: > If you have a signal generat

Re: Galileo Frequency Shifting and Filtering

All right guys, I got it, it works now. The central frequency should have been 1911.795 MHz instead of 1189.5MHz. The final configuration results as follows: [image: imagen.png] [image: imagen.png] Thank you very much to everybody! Best regards, David El mar, 28 feb 2023 a las 18:17, Marcus

Galileo Frequency Shifting and Filtering

Hi guys, I am trying to simultaneously record Galileo's E5a and E5b signals as follows: [image: imagen.png] I have tried to record them separately by tuning the local oscillator in the middle of the signals bandwidths and sampling at 25MHz and it worked. But when I try to shift and filter to get th

Re: Galileo E5a and E5b bands simultaneously receiver with GRC

Hi Marcus, Thank you for your very prompt response. I have changed that but it still does not work. Do you know if it is possible to separate the two bands after the UHD: USRP block? David El mar, 14 feb 2023 a las 16:54, Marcus Müller () escribió: > H David, > > that makes no sense –

Re: Dual-Frequency simultaneously receiver using one USRP 2901

Hi Claudio, Many thanks for your response. The issue was that I was trying to receive simultaneously 2 frequencies separated 400 MHz from each other while USRP's maximum instantaneous bandwidth was about 56 MHz only. Kind regards, David El jue., 26 ene. 2023 15:02, escribió: > H

Dual-Frequency simultaneously receiver using one USRP 2901

able to receive two different frequencies at the same time? In the affirmative case, is it ok to just split the incoming signal from the antenna with a splitter and connect it to two ports the USRP? Many thanks in advance, David

Pylance for C++ Gnuradio Blocks

issue comment <https://github.com/microsoft/pylance-release/issues/2440#issuecomment-1059604558> it seems that pylance requires .pyi stub files in this case. Are there gnuradio stub files or another supported way for pylance to work for all gnuradio blocks? Thank you, David

Re: Taylor detector

way to go. An accurate multiplier can be fed with near perfect > numerically generated sine waves with perfect amplitude and phase > balance. Besides, even if you wanted to simulate a square wave local > oscillator in DSP you'd have to approximate by only including the > harmonics u

Re: Taylor detector

Well, I'm sitting here recovering from open heart surgery for the next two months, and I've always wanted to tackle this little problem. Seems a bit scary though with all the moving parts. On Fri, Aug 12, 2022 at 2:21 PM Nick Foster wrote: > David, > > OK, I see what you

Re: Taylor detector

s D. Leech wrote: > On 2022-08-12 13:38, david vanhorn wrote: > > Ive been wrestling with this for a while, and im not even seeing how > > to get started implementing a Taylor detector in gr. > > > > Is it even possible? > You mean a *Tayloe* Quadrature Sampling Dete

Taylor detector

Ive been wrestling with this for a while, and im not even seeing how to get started implementing a Taylor detector in gr. Is it even possible?

Callback method not being provided in GR 3.10 OOT Block

As earlier, I am porting an OOT that worked with GR 3.9 into GR 3.10. I'm a C++ and CMake newbie, please keep that in mind. When I run a flowgraph with my GR 3.10 block in it I get: Traceback (most recent call last):     from gnuradio import mxvii     from .mxvii_python import * ImportError: /h

Re: Using std::popcout in a GR 3.10 block

This was solved in chat via some hints from Ryan. In short, I was wrong thinking that GR was using C++20 by default, and had to set it. I did in lib/CMakeLists.txt near the target definition: On Friday, July 8, 2022, 7:09:14 PM EDT, David Cherkus wrote: So, am working with a new

Using std::popcout in a GR 3.10 block

So, am working with a new C++ OOT I just made under GR 3.10 using gr_modtool. All the code created by gr_modtool compiled fine. I added a header file that uses std::popcout and got the compiler error: error: 'popcount' is not a member of 'std'; So std::popcout is a C++20 feature... Is there som

Different ways to code a GR block -- best practices?

So, I was reading someone's python block that was coded as a general block, and wanted to work in blocks of X elements as input.  If it got less than X, it just said I consumed nothing, and just waited to be called back repeatedly till eventually it was given X or more elements.   Note X wasn't

Re: OOT module problem

I fix the problem.! The problem was that Swig was not installed. Thank you for help. David Il Ven 13 Mag 2022, 18:34 David Martini ha scritto: > Dear Community, > > I'm starting to learn how to write an OOT module. > I'm following the tutorial : all the compilation proces

Re: OOT module problem

Hi, Thank you for your help. I followed your instructions but I got the same error. Executing: /usr/bin/python3 -u /home/david/bravo.py "" Traceback (most recent call last): File "/home/david/bravo.py", line 35, in import test_001 ModuleNotFoundError: No module named &#

Re: CSV file as input

me.eu/en/details/fcr6842031t/optical-connectors/cliff/otj-1-fcr6842031t/ > [2] > https://www.tme.eu/en/details/fcr6842032r/optical-connectors/cliff/orj-3-fcr6842032r/ > > On 18.03.22 19:53, Marcus D. Leech wrote: > > On 2022-03-18 14:48, david vanhorn wrote: > >> Noise is

Re: CSV file as input

-03-18 14:48, david vanhorn wrote: > > Noise is always an issue. I could do a serial port over USB, or TTL > USART, but I thought that the SD card would be the most quiet, not > requiring any electrical connection to the PC. > It also means that I automatically have my record

Re: CSV file as input

t might or > might not be easy > to implement :) In both cases, UART/SPI serial output converted to USB, or > native USB, > you'd probably have to afterwards write a schmall C/C++ driver, so that > SoapySDR or GNU > Radio directly can talk to it.) > > Cheers, > Marcus &g

Re: CSV file as input

n a > bit more breadth? What are the components of your system, and how does the > computer > running GNU Radio relate? > > Best and slightly excited regards, > Marcus > > On 18.03.22 18:37, david vanhorn wrote: > > Hi! > > > > I'm trying to interface some

Re: CSV file as input

l Source" block with complex output. Where can I see what that looks like at the level of raw data? On Fri, Mar 18, 2022 at 4:59 AM Marcus Müller wrote: > Hi David, > > you could write a quick python block that just reads values from the CSV > file and outputs > them. That'

CSV file as input

I've done a little with Gnuradio a couple years ago, but I'd now like to apply it to a serious problem. I have a design I'm working on that will output raw data that could be interpreted as an audio stream centered on 1kHz. I'd like to work on extracting CW signals that are rather slow, from a r

Re: GRC 3.9.4.0 - module porting problem

about compatibility. Thanks again, David -Original Message- From: Ryan Volz Sent: Friday, March 4, 2022 10:22 PM To: discuss-gnuradio@gnu.org Subject: Re: GRC 3.9.4.0 - module porting problem Hi David, If it works somewhere with GR 3.9, then it's not a porting problem and y

Re: GRC 3.9.4.0 - module porting problem

for clues in discrepancy. I have found in the past that an incremental inclusion of the C++ source code through the build process helps to identify the cause of the import failure. - He says, stating the obvious!! All the best, David -Original Message- From: Ryan Volz Sent: Friday

GRC 3.9.4.0 - module porting problem

_cc::make), py::arg("samp_rate"), py::arg("length_chips"), py::arg("duration_sec"), py::arg("filename"), py::arg("CN0_dB"), D(channel_signal_generator_cc,make) ) Any comments would be welcome. Many thanks, David GD4FMB

Selecting a SDR as a sink

Asked this on chat, thought it might need a broader audience so am asking here too... Part of my flowgraph looks like: I.e. a selector that selects between output to null sink, osmocom sink or PlutoSDR sink. Problem is when I run the flow and no SDR is present (I select Null Sink by defau

Using VSCode With gr-tutorial

Am following the Wiki UsingVSCode page ( https://wiki.gnuradio.org/index.php?title=UsingVSCode ). So, I set the breakpoint in the work function, it works as advertised, I hit the breakpoint. I use F5 to continue a few times and then delete the breakpoint since I get it, it's looping. The red

WSJT-X and Gnuradio audio, usrp sink underflows

The context is that I am developing a transceiver that uses external software (WSJT-X) as a sink for audio (on receive) and a source for audio (on transmit).  WSJT-X on receive essentially decodes signals in the audio stream.  On transmit it generates the signal at baseband. My USRP device i

Re: Problem changing LO with qt-gui range on Pluto SDR

Hi Chris, apparently you just discovered a bug, that just by chance, has already been fixed. Simply update to the latest feature/gr-iio and you'll be good to go. If you're interested in what went wrong, the set_params call erroneously included the buffer_size, see [0] vs [1]. David

Re: GNU Radio gr-osmosdr on Ubuntu Installation Error; Kali Successfully Installs but Can’t Run

In my particular case I install the gr-osmosdr by ubuntu repository and it work fine for 3.8.1 and not 3.9.0 For the moment I'm fine with 3.8.1 David Il Ven 7 Mag 2021, 11:34 Chris Vine ha scritto: > On Fri, 7 May 2021 00:43:25 -0700 > Cinaed Simson wrote: > > Hi David - lo

Re: GNUradio alsa audio

hi Marcus problem solved! thanks for information: I immediately localize the conf file and I can easily tune numbers of period. Best Regards, David Martini Il giorno mer 5 mag 2021 alle ore 14:27 Marcus Müller ha scritto: > How did you install GNU Radio? This usually defines where things

GNUradio alsa audio

. David

Re: GNU Radio gr-osmosdr on Ubuntu Installation Error; Kali Successfully Installs but Can’t Run

In my case gr-osmosdr on ubuntu 20.04 Work just in gnuradio 3.8.1. I'm not able to run it on ubuntu 3.9.. at least unit 10 days ago. David Martini Il Mer 5 Mag 2021, 12:49 Jeff Long ha scritto: > On Ubuntu 20.04, apt install gr-osmosdr works. > > It sounds like you've gone

Re: Teething problems with new GNU Radio 3.9 installation

Brendan, Out of curiosity, what versions of tensorflow and cuda are you using? David On Thu, Apr 22, 2021, 12:50 AM Brendan Horsfield < brendan.horsfi...@vectalabs.com> wrote: > Hi Ryan, > > I have some good news to report. > > While I was waiting for your reply (the curse

Re: gnuradio 3.9 on ubuntu 20.04

Hi Jeff thank you! it's work for me by removing cache.json Now gnuradio flow graph run just fine. BR David Il giorno sab 17 apr 2021 alle ore 12:57 Jeff Long ha scritto: > The first thing to try is > - quit GRC > - rm ~/.cache/grc_gnuradio/cache.json > - start GRC > -

Re: Errors in GRC3.9 due to swig to pybind change - any fixes?

Thanks! That solved most of my problems, now it's just that the LimeSDR stuff isn't working under 3.9, but that's for another list. On 4/11/21 8:45 PM, Jeff Long wrote: If you haven't already, try removing ~/.cache/grc_gnuradio/cache.json and restarting GRC. Then do the reselect if it still sho

Errors in GRC3.9 due to swig to pybind change - any fixes?

Has there been a release of GRC3.9 that fixes the errors in some of the blocks that comes from the swig to pybind change? e.g. I have a flow with the signal source, and it has this error: Param - Waveform(waveform):     Expression gr_waveform_t.GR_COS_WAVE is invalid for type 'int'. Just rese

Re: C++ Boost QA-tests linking issues

time_triggers/Related_Clocks.h: #include namespace gr { namespace time_triggers { class TIME_TRIGGERS_API Related_Clocks { [...] -David Myers On Fri, Apr 2, 2021 at 1:09 PM David Myers wrote: > Hello all, > > > > Longtime GNU Radio user, new member to the list her

Re: Transport stream source

VBlast software from the VLC team to stream what have been demodulated by the dongle. Simply "tune" to your favourite DTV channel and DVBlast will stream the TS over UDP. Happy Easter. David / F4HJA Le sam. 3 avr. 2021 à 21:49, Ralf Gorholt a écrit : > Dear all, > > instead of

C++ Boost QA-tests linking issues

Hello all, Longtime GNU Radio user, new member to the list here. I can’t get any C++ (Boost) QA tests to run in my OOTM. Specifically, I'm running into this linking error during the "make" step. usr/bin/ld: CMakeFiles/time_triggers_qa_Related_Clocks.cc.dir/qa_Related_Clocks.cc.o: in functi

Re: Resampling radio data

t too bad (There are enough C-examples online). David Von: Discuss-gnuradio im Auftrag von Brian Padalino Datum: Mittwoch, 17. Februar 2021 um 16:58 An: Marcus Müller Cc: GNURadio Discussion List Betreff: Re: Resampling radio data On Wed, Feb 17, 2021 at 10:05 AM Marcus Müller wrote

Re: explaining i/q

On 11/4/20 6:26 PM, david vanhorn wrote: "Twice the bandwidth" but that doesn't account for the 0 Hz "hole" where the incoming signal is exactly at the sampling rate. Or am I missing something? What "hole" are you referring to? There is the "zero b

Re: explaining i/q

"Twice the bandwidth" but that doesn't account for the 0 Hz "hole" where the incoming signal is exactly at the sampling rate. Or am I missing something? On Wed, Nov 4, 2020 at 3:28 PM Fons Adriaensen wrote: > On Wed, Nov 04, 2020 at 05:14:00PM +0100, Kristoff wrote: > > > For us, "even if we wou

Re: explaining i/q

an to make > >>> sure it's completely correct. But, I would not use the "slope" > >>> terminology. The important things are, as you've said, (1) with the > >>> complex type, you can have a signal at baseband that is not > >>> symmetric

Re: explaining i/q

Now, unless I am completely wrong, the model you use captures both the I and the Q samples at the same time. This means that there is no element of 'time'. In electronics, this works fine, due to the nature of mixing and a difference of phase of the two Local-Oscillators. But that's not how pe

Re: explaining i/q

Like I said previously: Think of the spinning dancer illusion. It works because you only see from one vantage point. If you saw a real doll spinning, and assuming you have two eyes and normal binocular vision, you will have parallax, and that will allow you to determine in reality which way th

Re: explaining i/q

I am sorrowful that you have decided you are going to stick with an explanation that is fundamentally incorrect. I know how direct conversion systems work - I design the software for them for a living. What you are basing your mental model on is an optimization for the case where the system is

Re: explaining i/q

The main difference between sampling with reals ('floats') and i/q sampling with complex numbers, is that the latter does not only provide the  instantaneous value (voltage) of a signal at a certain point of time, but also includes phase information (i.e. the slope of the signal at that point

Re: SDR / Amateur Radio / License exams

On 10/28/20 2:53 PM, hel...@relix.de wrote: Hi all, Good news, dear Kristoff! My question to all of you: Does any of your national Amateur Radio Examination Authorities foresee exam questions on SDR? The US exams for amateur licenses have a few questions on SDR for all 3 levels (Tech, Gen

Re: the meaning of the dotted line in the module

Hey, those are for messages. Some useful links: * https://wiki.gnuradio.org/index.php/Message_Passing * https://wiki.gnuradio.org/index.php/Guided_Tutorial_Programming_Topics#Message_Passing On 10/20/20 1:56 PM, HE Amy wrote: > Dear guys, > >   Please help me , I have a question, I know that t

Re: USB communication

Hey, in case you were referring to the "Universal Serial Bus": The short answer: As far as I know, there is no _direct_ way of using "USB communication in gnuradio". The long answer: Using "USB communication" might not be what you think it is, and there are good reasons why GNURadio might not

Re: USB communication

On 10/4/20 11:26 AM, Barry Duggan wrote: > Hi, > > Yes, there are blocks to implement SSB transmit and receive using > either the phasing method or filters. I don't thing OP was referring to Upper Side Band... > There must be a way to implement one of the most common means of > communication i

Re: GRC Filter Taps read from file. (3.8.2.0 - from source)

Marcus, Jeff, The files were simply not being recognised. A combination of path and format/ endianess. Now working with both space de-limited text as per Jeff’s example and numpy.float32 files as source. Many thanks. David From: Jeff Long Sent: Wednesday, September 16, 2020 9:14 PM To

GRC Filter Taps read from file. (3.8.2.0 - from source)

been tried. On a completely unrelated matter, I hope, the Filter Design Tool is inoperative. I apologise if this is covering old ground again. Regards, David GD4FMB

Re: GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks

test OOT code on a secondary platform will be beneficial. Many thanks David From: Josh Sent: Monday, August 31, 2020 12:34 PM To: David Taylor (manx.net) Cc: GNURadio Discussion List Subject: Re: GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks David, As far as I know, 3.15 is the

Re: GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks

tle on stable GRC/UHD variants for the next twelve months or so. Best regards, David GD4FMB From: Josh Sent: Monday, August 24, 2020 8:09 PM To: David Taylor (manx.net) Cc: GNURadio Discussion List Subject: Re: GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks David, 1) How is yo

Re: GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks

AttributeError: message for the python and C++ OOT block. Once resolved, I can move forward again with the external library inclusion. Many thanks, David GD4FMB From: Josh Sent: Monday, August 17, 2020 11:45 AM To: David Taylor (manx.net) Cc: GNURadio Discussion List Subject: Re: GRC version

Re: GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks

package in /cmake/Modules/and ${VOLK_GNSSSDR_LIBRARIES} appended to target_link_libraries as before. Volk itself requires no special treatment other than profiling before use. I will continue to check the detail. David From: Josh Sent: Monday, August 17, 2020 11:45 AM To: David Taylor (manx.net

GRC version 3.9.0.0 git master (python 3.8.2) + OOT blocks

have relatively primitive interfaces. Many thanks, David Taylor

New block 'Stream Demux'

m/dave-pi/gr-stream_demux. I've done some of the work for eventual integration into the codebase (CMakeLists, yml, swig, qa,...) and tested it on 3.8 using PyBOMBS, but not 100% sure of the workflow or indeed the interest so would like to know first. Tks, David

Re: [USRP-users] 2021 IEEE Aerospace Conference

2020 Program https://ieee-aess.org/conference/2020-ieee-aerospace-conference-aeroconf 2019 program https://ieee-aess.org/conference/2019-ieee-aerospace-conference 2018 program https://ieee-aess.org/conference/2018-ieee-aerospace-conference Perhaps this is sufficient? On Thu, Jun 25, 2020 at 6:35

Variables and messages - never the twain shall meet?

It seems to me that there is a fundamental design flaw in how the UI elements of GnuRadio Companion work. Several modules, like the Qt Frequency blocks, can output messages when you click them, to inform *somebody* as to where you clicked. This would be great for setting a new frequency, but..

Re: Complex in/Complex out Hilbert?

On 4/19/20 1:21 PM, Michael Carosino wrote: The Hilbert block in gnuradio is specifically for taking a real input and creating it's analytic signal. As noted above, this means the output is complex with real(out) = delayed(in), imag(out) = hilbert_filtered(in). This is the same as how it is i

Re: Complex in/Complex out Hilbert?

When demodulating a real-world signal, you have the problem that there's other signals too - there's the other station 4kHz down that you want to remove. So yes, you can say the signal of interest is an analytic signal, but then there's everybody else too. True, you can demodulate the signal by

Complex in/Complex out Hilbert?

I noticed that the version of GnuRadio that is released in Ubuntu 20.04 has a real-in/Complex out Hilbert block, which is great for modulating SSB. But it lacks a complex-in/complex-out Hilbert for doing the demodulation side. Is there any package with the complex/complex form of the Hilbert? O

gr-rds modules documentation

I'm trying to find any documentation on the gr-rds modules - specifically, what do they expect to be fed with? It doesn't look like they accept IF, nor demodulated FM - it looks like they expect some other block between them and the FM discriminator. I've not found any docs on the WIKI, nor any

Re: analog_pll_carriertracking_cc bug

I applied your correction of multiplying by 2pi, and while it locks now, it also doesn't seem to be very clean - there's a lot of noise on the signal, and the phase compared to the reference still is running through the unit circle. I've tried increasing and decreasing the loop bandwidth, and I

analog_pll_carriertracking_cc bug

I was trying to use the PLL carrier tracking block, and found that it doesn't seem to work at all. I have a simple flow graph demonstrating this - what would be the best way to share it? It's pretty easy to demonstrate: take a signal generator generating a complex sinusoid at some frequency "

[Discuss-gnuradio] E320 Network Mode TX on both channels

results. David Stockton (CTR) 719.554.4219 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Moving my antenna

It would be very helpful to know the main frequency of interest. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Moving my antenna

Coax loss can be a big issue. Given the low power levels you will suffer less loss on a long run using 75 ohm coax cable which is designed for low loss, even assuming you do nothing about the mismatch at the ends of the run. All that is good up to about 1ghz where more specialized coax is needed f

[Discuss-gnuradio] Sdrplay rsp2pro on Windows 10

I have seen a lot of links and tried a lot of downloads. My hw works but sofar osmocom does not see the device. I assume that means I have not found the real driver I need. Does anyone have this working on Windows, and can I get a pointer to the working driver? ___

Re: [Discuss-gnuradio] Moving average

So how would you represent this expression so that it evaluates as floating point: As the "Delay" variable in a delay block: Phase * (SampleRate/360) On Tue, Jan 22, 2019 at 5:59 AM david vanhorn wrote: > Nope. > > 1/Averaging evaluates to zero. > 1/Averaging. (tra

Re: [Discuss-gnuradio] Moving average

on > > 1/4000. > 1/5. > > -- Cinaed > > > On 1/21/19 4:41 PM, david vanhorn wrote: > > The docs say that I need to set Scale to the inverse of the Length. > > Ok, I interpret that as Length = 4000 and Scale = 1/4000 > > The do

[Discuss-gnuradio] Moving average

The docs say that I need to set Scale to the inverse of the Length. Ok, I interpret that as Length = 4000 and Scale = 1/4000 The docs here: https://www.gnuradio.org/doc/doxygen/classgr_1_1blocks_1_1moving__average__ff.html says that Scale is a float. The discussion here clearly shows Scale working

Re: [Discuss-gnuradio] Removing obsolete Heir blocks from my list

nd GRC scripts? Look in > "~/.grc_gnuradio/" and find the correct .py and .xml or .yml files & "rm" > them. Not sure what else you might mean, so hopefully this helps! - MLD > > On Mon, Jan 21, 2019, at 3:14 PM, david vanhorn wrote: > > I've created s

[Discuss-gnuradio] Removing obsolete Heir blocks from my list

I've created some heir blocks, and now I have some that I'd like to remove from my list as they are obsolete. How do I remove them? -- K1FZY (WA4TPW) SK 9/29/37-4/13/15 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/m

[Discuss-gnuradio] Output port problem?

Error message "destination port 0 out of range for QSD Summing Amplifier(7)" This heir has a pad source with four float streams and a pad sink with one complex stream. Everything is float, and everything is connected. I assume the error above is talking about the pad sink. ID pad_sink_0 Label out

Re: [Discuss-gnuradio] Tracking down error messages

message, but it’s something like > what you reported , hence my wondering. We should really get this fixed in > some forthcoming GR release. Hope this is useful! - MLD > > On Sat, Jan 19, 2019, at 11:43 PM, david vanhorn wrote: > > I am only a couple days into this, with a project that

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