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Questions tagged [gnuradio-companion]

GNU Radio Companion (often abbreviated as GRC) is a graphical toolkit to design GNU Radio flowgraphs and whole signal processing algorithms.

GNU Radio Companion (often abbreviated as GRC) is a graphical toolkit to design GNU Radio flowgraphs and whole signal processing algorithms.

It's not an independent project, but is included in GNU Radio. The graphically defined flow graphs get translated into Python source code that instructs GNU Radio to logically connect the blocks used.

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Change data type of QT GUI Vector sink in gnu radio companion

I'm running gnuradio 3.7.11 and I'd like to dump the bytes output of a GFSK demodulation block into a vector sink. However, the QT GUI vector sink block in gnuradio companion seems to be a float type only. I know I can use different vector sink…
jwanga
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How can I programmatically change attributes in my GNUradio flow?

I need to change the receive and transmit gain on my source/sink respectively based on data that will be calculated in my own piece of code. What is the best way to do this? None of the tutorials describe how this is done. Ideally the GNUradio…
padraig
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Phase modulation with residual carrier

I'm currently implementing a phase modulation scheme with a residual carrier. This modulation scheme is mostly used in deep space communications. I have already derived the I-Q components as follows I(t) = Power_total * sin(h) * d(t) Q(t) = -1 *…
Moses Browne Mwakyanjala
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File sink in gnuradio

I am using USRP1 along with gnuradio. I want to store received data in a file using file sink. I would like to have an idea about the flow graph and with what extension I can store the file and how to read the data from the file. Thanks in advance.
Yaaseen
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GNUradio : stream data using multiply_cc()

I am using a USRP to transmit BPSK modulated data. To modulate, I use a 80 000 elements vector (vector_source_c format) which I want to multiply with the data (vector_source_c as well) I'd like to send. My problem is that the data is important, so…
EllaStique
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GNURadio - WX FFT Plot not showing frequency on the x axis

I'm using WX GUI FFT to display a specific frequency range (38Hz for IR). I can't seem to get the plot to show the frequency range on the x axis. I have it set up like follows: And here's what it looks like when it runs: As can be seen there's no…
BugHunterUK
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why CRC32 is non-linear in gnuradio?

I have a question regarding the non-linearity of the CRC32 in gnuradio. I am working on a project where i need a linear CRC32 meaning that: crc(a xor b) = crc(a) xor crc(b), where a and b represent a packet. The implementation of CRC32 in gnuradio…
nader
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GRC file meta sink how

I'm new to GRC. I want to modify the attached config to replace the "file sink" at the bottom of the image with "file meta sink", so I can use a program to read the header and then the complex samples. I guess I might need a different stream…
Don Mclachlan
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Radio module (GNU RADIO) and USB by bluetooth

I'm working actually on an android application. The goal of this app, is to connect in bluetooth one device (smartphone) too another device (raspberry pi). My radio module is connect into USB at raspberry pi. My application actually can connect in…
programmation1994
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how to build gps signal receiver and transmitter in GNU Radio

Can anyone guide me to accomplish my project? That project consists of building GPS receiver and transmitter using CDMA. I have found gr-cdma in git but I don't know how to configure it. There are a lot of errors in it.
Santa Marley
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gr-dect2 - Fatal Python error: PyThreadState_Get: no current thread

I installed gnuradio via macports. I have been able to install the majority of the other blocks via macports, however I was wanting to start playing with DECT and the block was not listed on macports. So I manually went to install it via the…
xtr33me
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gnu radio installation issue

I am facing the following error message by using command git clone error: RPC failed; curl 56 GnuTLS recv error (-54): Error in the pull function. fatal: The remote end hung up unexpectedly fatal: early EOF fatal: index-pack failed
Ozair Iqbal
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Create GNURadio source block: how to tune the sample rate

I'm trying to implement a custom source block for the Analog Discovery 2 oscilloscope in GNU radio. I already have a working python script to record samples from the Analog Discovery 2 device to a WAV file (code at the end of the question). I'd like…
Vincz777
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Can GNU Radio modulate and demodulate a text file?

I'm new to sdr, dsp, and GNU Radio. My goal is to create an FSK demodulator for a project at work (described in this question), but since I haven't been making progress, I'm trying to teach myself some of the basics. For practice, I'm trying to set…
Evan
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GNU Radio Companion - Can't find osmocom block

I'm using GNURadio Live DVD and GNU Radio Companion which is included on the live DVD. I'm trying to find the osmocom block but I can't seem to find it. It should be under "Sources" in the block list but there is no "Sources". I'm using a HackRF One…
BugHunterUK
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