Hi Kristoff
I already tried this in the past but did not saved the
corresponding grc file. I remember thath I did not succeed in
getting a non rotating constellation for the RDS signal which
normally is achieved when using your method. I also tried to
de
Going back to this problem, I recently set up a fresh Raspberry Pi 4
system using Ubuntu Server 19.10 and compiled GNU Radio v3.7.13.5 from
source, which also compiled the built in Volk. I then ran volk_profile
and was surprised to find that the generic machine was very often
faster than NEON, and
Hi Amr,
that just either means that the kernel has no NEON implementation so
far, so generic is the only choice, or, and that's *good* news, the
compiler has gotten so smart that it outranks hand-written code.
Best regards,
Marcus
On Fri, 2019-11-15 at 14:01 +0300, Amr Bekhit wrote:
> Going back
Hi
Your amplitude is set in constellation object, in the
constellation points list.
At present yours is +-1 for BPSK, and +-1+-j for QPSK
So amplitude is 1 (+-1) for BPSK and 1.414 for QPSK
This must be adjusted to your requirements (-0.5,0.5) for
… and the easiest way to adjust that is by simply multiplying the
result with the appropriate factor
Best regards,
Marcus
On Fri, 2019-11-15 at 13:06 +0100, Christophe Seguinot wrote:
> Hi
>
> Your amplitude is set in constellation object, in the constellation points
> list.
>
> At present y
Hello, Thank you so much for your response. Yes, I get it.
I did multiply the result with the factor but I wanted to know how the
constellation object setting defined it.
Now I know that, thanks to Mr. Christophe and Mr. Marcus.
On Fri, Nov 15, 2019 at 1:20 PM Müller, Marcus (CEL)
wrote:
> … an
New here and new to gnuRadio...
I'm attempting to get plutoSDR up and running on a Mac, I've installed
gunradio and dependencies, I've also downloaded and built libiio,
ibad9361-iio and gr-iio. Following this I've moved the block files across
to the working directory. Running gnuradio-companion
I
Hi Kevin,
I’ve run into this too.
The instructions tell you the solution after the build commands
change the “cmake” line to
cmake -DCMAKE_INSTALL_PREFIX=/usr .
and rebuild all
and do the copy step they suggest on site
https://wiki.analog.com/resources/tools-software/linux-software/gnuradio
Hi Kevin,
See also https://github.com/gnuradio/gnuradio/pull/2781
Emmanuel
On 15 Nov 2019, at 14:41, Glen I Langston wrote:
Hi Kevin,
I’ve run into this too.
The instructions tell you the solution after the build commands
change the “cmake” line to
cmake -DCMAKE_INSTALL_PREFIX=/usr .
and r
Thank for your help Chris,
I have now gotten the SDRPlay connected to my telescope
and the results are looking reasonable.
My initial problems were with the sense of the gain values, which
are actually attenuation values for the SDRPlay.
It seems like the defaults are reasonable, and that probab
You need to set
{{{
PYTHONPATH=/usr/local/lib/python2.7/site-packages/:$PYTHONPATH
}}}
to get access to gr-iio.
On Fri, Nov 15, 2019 at 8:17 AM Kevin Wheatley
wrote:
> New here and new to gnuRadio...
>
> I'm attempting to get plutoSDR up and running on a Mac, I've installed
> gunradio and depen
I -strongly- recommend against setting the CMAKE_INSTALL_PREFIX to a system
directory such as /usr when you are building from source (not using a
package manager)! You never know what you're going to overwrite from the
system itself, which can cause library loading breakage. When installing
anythin
One final reply: You used MacPorts to install GNU Radio ... so why not use
it to install all of the IIO stuff? "port search iio" should come back with:
{{{
gr-iio @20190725-9088ac79_1 (science, comms)
Provides augmented functionality for GNU Radio: IIO device source
libad9361-iio @20190910 (sc
Thanks
I’ll try that in the future.
However I’m not sure why this is an issue in the first place. It should
be fixable at the cmake step.
Looking at the link provided in an earlier email, it seems
like part of the problem is the different uses of
site-packages and
dist-packages.
Can that be fixe
Hi Glen - Yes, all of this can be fixed in the "cmake .." step. That's what
we do in MacPorts to get all of the files installed in the correct
locations (using CMAKE_INSTALL_PREFIX=/opt/local by default; but also using
other cmake variables to set other install locations to be not the default
too,
The 3.7-era constellation encoders, if I remember correctly, are
average-power-normalizing. So, as I said, simply multiply by a factor
0.5. You already have that in your flow graph and bypassed it.
So, you already know what to do. Go wild! (Also, you usually do *not*
want a fixed peak-to-peak ampl
On 11/15/2019 09:17 AM, Glen I Langston wrote:
Thank for your help Chris,
I have now gotten the SDRPlay connected to my telescope
and the results are looking reasonable.
My initial problems were with the sense of the gain values, which
are actually attenuation values for the SDRPlay.
It seems
> From: Kristoff
> Date: Thu, 14 Nov 2019 23:39:32 +0100
[snip]
> Question:
>
> I am trying to find a way to use the 19 KHz stereo-pilot signal to
> create a 57 KHz carrier (to down-convert the FM/RDS carrier at 57
> KHz).
>
> How do I do this?
Use the PLL carrier tracking bloc
Hi Marcus,
Two good things about the SDRplay, now that the gnuradio interface seems
to be working, are:
1) Very high gain. I need about 30 dB of IF attenuation to get the levels
right.
2) Very good data transfer rates. Right now I appear to be getting 100% of
the 7 MHz samples
delivered to
Hi Marcus,
Thanks for the clarification. I guess in this case, seeing as volk
correctly detected the presence of neon during the compilation process
but found the generic machine to be faster, then I can assume, as you
said, that GCC 9 is indeed doing a better job than the hand optimized
assembly!
I am trying to build gnuradio branch maint-3.8 and I am having trouble getting
qt-gui to enabled. I am currently using the new distro CentOS 8, and I cannot
find any ‘qwt’ packages. Has anyone got gnuradio to build on CentOS 8 yet? I
am very close to having all the modules I desire to be buil
... which either means that's fine, or we need more (or sometimes,
better) NEON implementations. If this is critical to you, let us get
you onboard with VOLK development – and get your NEON code upstreamed!
:D
Best regards,
Marcus
On Fri, 2019-11-15 at 21:34 +0300, Amr Bekhit wrote:
> Hi Marcus,
Oh, CentOS 8 is out! Nice, I was waiting for that.
Let me check whether I can reproduce.
Best regards,
Marcus
On Fri, 2019-11-15 at 19:19 +, Mark Koenig wrote:
> I am trying to build gnuradio branch maint-3.8 and I am having trouble
> getting qt-gui to enabled. I am currently using the new
Hi Mark,
On 15/11/2019 21.19, Mark Koenig wrote:
> I am trying to build gnuradio branch maint-3.8 and I am having trouble
> getting qt-gui to enabled. I am currently using the new distro CentOS 8, and
> I cannot find any ‘qwt’ packages. Has anyone got gnuradio to build on CentOS
> 8 yet? I a
Ah, it's the same old blues; need to have qt(4)-devel packaged for qwt.
(What I've tried is: Run Fedora as host, and have a podman (or docker,
as if I care, replace "podman" by "docker" below) container
marcus@workstation> podman run -it --rm centos:8)
This is a very rough rundown of what I just
Hi,
I’m an engineering student of third year who have been using this tool for 1
year and i love GNU radio. Now i feel that i can contribute to this project and
help the free software, but i don’t know if i got the needed skills.
I would like to help developing tools because i know a few progra
César,
yes, absolutely. Just get started and see where you have troubles. Make
sure you can install GNU Radio (you can start with our Launchpad
installation), and then see what you can / can't do.
If you're asking for something specific, how about you do the guided
tutorials (you can find them on
Hi César!
It's awesome that you want to help!
If you've used GNU Radio before, then: YOU DEFINITELY HAVE THE SKILLS!
Generally, we always need people to
1. Write documentation,
2. Test our current development version,
3. Report and reproduce bugs,
4. Review pull requests,
5. Fix bugs and
6. impl
Hi Martin, César,
> If you're asking for something specific, how about you do the guided
> tutorials (you can find them on the wiki), and see if they are still up to
> date?
Oh, yes! I totally forgot about these. Yes, going through these with an
as-modern-as-possible GNU Radio installation woul
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