Hello
We’ve been successful in simultaneous radio astronomy with high schools in the
US, including
California, North Carolina, Illinois, Virginia, New York and West Virginia.
We’d like to expand to southern hemisphere as well, so that we can get a full
sky image
of the Milky Way.
We’ve just
radio_astro37
>
> gr_modtool update --complete
>
> cd ..
>
> cd gr-radio_astro/grc
> cp ~/xfer/gr-radio_astro37/grc/*.yml .
>
> cd ..
> cd examples/
>
> cp ~/xfer/gr-radio_astro37/examples/*.grc .
>
> cp ~/xfer/gr-radio_astro37/examples/*.conf .
>
>
Hi Gisle,
I think you’ve revealed the problem that we’ve not “Upgraded” to 3.8.
What build environment are you working in Gnuradio 3.7 or 3.8?
We’ve been making half hearted, repeatedly failed, attempts to get our code
running with 3.8. There are just too many changes to figure them all out.
Hello
I’ve been a great proponent of gnuradio, but I’m finding in
increasing difficult to do anything new, as installation of 3.8 is
essentially impossible for most people.
I’ve written and built my own python modules and C++ blocks.
However, despite months of trying now, I can not get 3.8 to
and at the other end the Tsys was too high, with a reasonable value of
about 100 K
in the middle of the 1420 MHz band.
Still trying to figure this out.
Best regards
Glen
> On Nov 15, 2019, at 11:56 AM, Marcus D. Leech wrote:
>
> On 11/15/2019 09:17 AM, Glen I Langston wrote:
>> Than
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
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
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
pdate, just like you
> can with the GUI.
>
> On 14 Nov 2019 Thu at 5:28 PM Glen I Langston
> wrote:
> This email is a question concerning the Gnuradio transition from
> a GUI interface to purely python execution.
>
> We’ve developed a series of gnuradio-companion compatible desig
This email is a question concerning the Gnuradio transition from
a GUI interface to purely python execution.
We’ve developed a series of gnuradio-companion compatible designs
that are "just about" perfected from our point of view. Now we’re going
from interactive mode to fully automatic startup
Thanks Marcus,
Concerning your points, I thought I’d edited the Subject line to
start a new thread. I’ll be more careful in the future.
Also thanks for your clarification of the source code origin. I’ve also
directly contacted the folks at SDRPlay.
I do think the SDRPlay folks do want to be
Hi Marcus,
That’s great. What could you hear/detect with the 90 kHz bandwidth?
Glen
> On May 15, 2019, at 5:28 PM, Marcus D. Leech wrote:
>
> On 05/15/2019 03:23 PM, Brad Hein wrote:
>> Great suggestion thank you! This also gives me new topics to read up on as I
>> am still a VLF amateur.
Hi Marcus,
> On Apr 9, 2019, at 4:10 PM, Marcus D. Leech wrote:
>> My goal is to get 4 horns arranged in a “Y” and correlate the common events,
>> since we’re recording
>> time tagged voltages. With a total spacing of 40’, we might achieve
>> localization of about 1 degree
>> uncertainty on
Hello Gnu-Radio.
We’ve been working to get Radio Astronomy working reliably in Gnuradio. A
number of
folks have made some excellent contributions to this area.
Kevin Bandura and I have been working with the Green Bank Observatory to develop
horns for observation of the spiral arm structure of
The actual GitHub command is
git clone http://GitHub.com/glangsto/gr-nsf
sorry for any confusion.
Glen
> On Jan 30, 2019, at 12:37 PM, Glen I Langston
> wrote:
>
> Thanks for both the question and the answer!
>
> I’ve been puzzling over how to selectively capture d
Hi
There are probably several blocks that could do the running
average. I’ve written a version in python, which is a part
of the radio astronomy interface.
The code and radio astronomy interface and instructions are at:
GitHub.com/glangsto/gr-nsf
The python blocks are in the sub-directory
with them or just ssh
in and run
without graphics display? If you do use VNC, which VNC program did you
install?
Thanks again,
Glen
> On Jun 8, 2018, at 11:12 AM, Marcus D. Leech wrote:
>
> On 06/08/2018 11:04 AM, Glen I Langston wrote:
>> Hello Gnuradio Aficionados,
>
for “linearity” and “sensitivity” do for
AIRSPY.
> On May 21, 2018, at 2:50 PM, Glen I Langston
> wrote:
>
> Hello all,
>
> Thanks for all the interesting discussion. Very educational.
>
> I’ve got a pair of questions concerning the QT vector sink.
>
> My ap
Hi
I agree that the Odroids are pretty good. Marcus Leech pointed them out
to me. I’ve got a couple XU4s (8 cores) that work pretty well. What I really
like is that with the mate operating system and EMMC’s they boot in just
a few seconds.
Glen
> On May 27, 2018, at 11:15 PM, Cinaed Simson
Hello all,
Thanks for all the interesting discussion. Very educational.
I’ve got a pair of questions concerning the QT vector sink.
My application uses the vector sink for plotting and diagnostics
of averaged spectra.
I’m getting the impression that the QT vector sink is using a good fraction
ot; is in the end a container of
> > all output streams; remember, blocks can have multiple output streams.
> > You have exactly one, so you take that by saying
> > out = output_items[0]
> >
> > Same goes for input_items; you want the first one, so use
> >
> On Mar 16, 2018, at 8:16 PM, Marcus D. Leech <mle...@ripnet.com> wrote:
>
> On 03/16/2018 10:57 AM, Glen I Langston wrote:
>> Hi
>>
>> Thanks for your help. I know no-one else cares, but
>> I’ve finally figured out all the steps to get Vector decima
.
> You have exactly one, so you take that by saying
> out = output_items[0]
>
> Same goes for input_items; you want the first one, so use
> input_items[0] instead of input_items.
>
> Hope that helps a bit!
>
> Best regards,
> Marcus
>
> On Thu, 2018-03-1
Hello Marcus and all,
Sorry to keep dragging on with this vector decimate.
I’ve gotten “vave” into grc but it is not running properly.
The grc messages I get are below:
Generating: '/Users/glangsto/Desktop/Research/vdecimate/keep5.py'
Executing:
gt; Point I'm trying to make: "output_items" is in the end a container of
> all output streams; remember, blocks can have multiple output streams.
> You have exactly one, so you take that by saying
> out = output_items[0]
>
> Same goes for input_items; you want the first one
Hello GnuRadio fans,
I’m afraid I’m a complete failure at creating my own vector average
with decimate block. This is my 4th week at this endeavor...
I’ve run through a number of c++ and python web examples and each time am
getting
hung up somewhere.
I’ve been following the examples from many
n[0] is
> (4,1024). You're missing a loop that iterates over the input vectors.
>
> On 03/11/2018 02:06 PM, Glen I Langston wrote:
>> Hello Gnuradio experts,
>> I'm following the gnuradio tutorial for creating an out of tree python block.
>> My intention is fairly
this.
I’ll give it a try.
Best regards
Glen
> On Mar 11, 2018, at 3:23 PM, Marcus D. Leech <mle...@ripnet.com> wrote:
>
> On 03/11/2018 02:06 PM, Glen I Langston wrote:
>> Hello Gnuradio experts,
>>
>> I'm following the gnuradio tutorial for creating an out of t
Hello Gnuradio experts,I'm following the gnuradio tutorial for creating an out of tree python block.My intention is fairly simple. To have a input stream of 4 vectorsand average these 4 vectors, outputting a single average vectorafter the 4th vector arrives. Right now my vectors are 1024
Hello
Your discussions are very relevant to an topic we in the radio astronomy
group are interested in. We’re looking for transient events and
would very much appreciate examples of block implementations that
write out selected events, as time series or as spectra.
Thansk,
Best Regards
Glen
Hello Fellow Gnu-Radio early adopters,
My application, seriously modified for Radio Astronomy, uses
WXgui and the “notebook” feature. What is the best way, within “QT”
to implement the notebook-like look of the QT version of the program?
Ie we enter a lot of information concerning the
05:40 PM, Glen I Langston wrote:
>> Hi Marcus,
>>
>> I just found the problem. My device only has one channel. I deleted
>> all the 2nd channel stuff and the spectro_radiometer is working great.
>>
>> I’ve got to find where the data is going, but I li
processing
hooks to enable realtime detection and writing of values
for later processing.
Do you think that a Radio Astronomy GSoC topic merits consideration?
Thanks
Glen
> On Feb 7, 2017, at 4:45 PM, Marcus D. Leech <mle...@ripnet.com> wrote:
>
> On 02/07/2017 04:20 PM, Glen I
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