A question about https://github.com/Radio-Source/GSR/tree/main

[Stephen Arbogast]

Has any one been able to make it work?   I keep  getting  syntax    errors from   Parameter Blocks  in the GRC  flowgraph  when  the   .py file is  generated and  run....    

I have  noticed some  comments  in the flow graph  that some code  was taken  from WVU DISPIRA   which is   now getting  relatively old.  I have stopped paying  attention to  WVU DISPIRA     after  some  advice from Marcus  Leech.

Don't  want to  start  a  code war ..    curious  minds want to know.

My  understanding is that  GNU  radio  code releases   are not   always   backward  compatible...    I am wondering  if  this  is my problem  since a  Parameter  block  should  be  simple.

Stephen

[Marcus D. Leech]

On 2025-08-12 21:18, 'Stephen Arbogast' via Society of Amateur Radio

There's no guarantee that code written for GR 3.7 (for example) will
work as-is on GR 3.10 -- in fact, it's nearly-guaranteed that it won't.

The WVU DSPIRA codebase is now quite old, and nobody (as far as I can
tell) has ported it to newer GR instances.  I get bitten by this from
time to time as well, and
  in the last few releases of GR, things have calmed down in the "break
everything" category.  Large, long-lived software projects go through
phases where backwards
  compat isn't always maintained, sometimes for arbitrary reasons,
sometimes for good ones.

For example, GR "held out" for years on generating Python 3.x code,
because they wanted compatibility with Python 2.7 environments, but
eventually, they really had
   to bite the bullet and move to Python 3.X, since the rest of the
world had done so (more or less) 5 or 6 years earlier...

Now, one can argue that the changes in Python3.X itself were somewhat
gratuitous, but it's not like GR has any influence over the language(s)
it uses to do what it does.

[Stephen Arbogast]

Ah  Hah....     Thank You.

[jpett...@gmail.com]

Works OK for me, Ubuntu 24.04.3, python 3.12.3, GRC 3.10.9.2

 

Jonathan

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[Stephen Arbogast]

Please  send  some  screen shots...  spectral   density   and  pwr  vs  ra......?

[jpett...@gmail.com]

Best I can do. I only used it to test out the write to ezRA format!

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[Marcus D. Leech]

What errors are you seeing, exactly?  I didn't recognize that you were trying for Pierre Terrier's code, which should be quite similar to BAA Seminar, and "just work".

[Stephen Arbogast]

So you  have not   gotten   graphics  ?   Maybe   I am dreaming    here.    I like   to see     some  graphs  before  I start   massaging    my drift  scan  raw data.

[jpett...@gmail.com]

I don't know what you are asking for. The program interface is shown on the git hub page. The program is helpful as it allows you the choice of using an RTL-SDR or an Airspy for capturing the data.

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[Stephen Arbogast]

Yes  I see that, but   would  like  to see  your   results.

[jpett...@gmail.com]

One of the files I sent earlier is some data collected with the software and written out in the ezRA format. This can be analyzed using the ezCon module of the ezRA software package. This produces lots of informative graphics. I would enclose a file containing the analysis, but it's too large for Google.

 

Alternatively, the data from the program can be saved in a CSV format for analysis with Excel.

 

The other file I sent earlier is the total power data, collected at the same time. This is a CSV file that you can open in Excel and plot.

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[Stephen Arbogast]

WOW     I   got it  working !  I  bypassed   the  parameter  blocks  and  directly  entered info into the Soapy  source   block   here  is   a  screen shot.....

Very  coo!

[Stephen Arbogast]

Still   the plot is   power spectral  density not  Doppler

[Stephen Arbogast]

Well     I have  managed  to get some  plots    from    https://github.com/Radio-Source/GSR/tree/main      but  given  my  experience  I  will not  use it  .. not  because it is  bad  code..  it  will not  run  on my   latest   GRC. I am not  saying  it  is  bad code.......

[Stephen Arbogast]

This is a  problem  we all face in   software..   keeping  up  with  upgrades.....

[Marcus D. Leech]

On 2025-08-13 01:06, 'Stephen Arbogast' via Society of Amateur Radio Astronomers wrote:

Well     I have  managed  to get some  plots    from    https://github.com/Radio-Source/GSR/tree/main      but  given  my  experience  I  will not  use it  .. not  because it is  bad  code..  it  will not  run  on my   latest   GRC. I am not  saying  it  is  bad code.......

What version of GR are you running?

I pulled GSR last night, and it worked.  Although it seems to be hard-coded to use an AirSpy?

On Tuesday, August 12, 2025 at 10:35:25 PM UTC-6 Stephen Arbogast wrote:

Still   the plot is   power spectral  density not  Doppler

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[fasleitung3]

For whatever it is worth to you: Earlier this year I installed https://github.com/WVURAIL/gr-radio_astro on a clean out of the box Debian 12 system with it's version of Gnuradio.

Installation went smooth using https://wvurail.org/dspira-lessons/gr_radio_astro_Installation

Usage is explained at https://wvurail.org//dspira-lessons/spectrometer_w_cal_Instructions

There is also a third party instruction at https://physicsopenlab.org/2020/07/26/gnuradio-software-for-the-21-cm-neutral-hydrogen-line

Best regards,

Wolfgang

[Marcus D. Leech]

On 2025-08-13 01:09, 'Stephen Arbogast' via Society of Amateur Radio Astronomers wrote:

This is a  problem  we all face in   software..   keeping  up  with  upgrades.....

On Tuesday, August 12, 2025 at 11:06:54 PM UTC-6 Stephen Arbogast wrote:

Well     I have  managed  to get some  plots    from    https://github.com/Radio-Source/GSR/tree/main      but  given  my  experience  I  will not  use it  .. not  because it is  bad  code..  it  will not  run  on my   latest   GRC. I am not  saying  it  is  bad code.......

FWIW, this is what I get with "GSR" installed on my Ubuntu 22.04 system, with GR 3.10.1.1 (stock from the Ubuntu repo, no local mods).

[Stephen Arbogast]

I  am using  GR 3.10.9.2 (Python 3.12.3) on Ubuntu 24.04.3  running on  AMD64

Things are  working  now...   not so much  in Windows 11

[Stephen Arbogast]

I  am  getting   good results... now  with  my  current installation   of   GNU Radio   and Python   on  Ubuntu  Linux..

I am  sending this  email from  Windows  11  because  this is  where my  Thunder  Bird   email   account  is .

Ted  Cline and  others  are  doing   wonderful  work  on  a version of  ezCol  that   uses   the work of  Marcus  Leech...     baa_ seminar    to  achieve  support  of  more  SDRs  at faster   sample  rates...thus  we will have  more  choices in the  future  for   exploration.

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