Andrew Thornett Gnu Radio Group

[Stephen Arbogast]

Andrew,

I have searched my email  for a notice about  the  next GNU Radio  Group  meeting  but  did  not  find   anything.      Have  you  announced the  meeting?

I  feel   very  strongly   about   using   GNU  Radio  for  data  collection  since GNU  Radio  has  built  in    buffer  management and an executor  that manages   processes for us.

Stephen

[Andrew Thornett]

Not yet sent out 

Sent from Outlook for Android

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From: 'Stephen Arbogast' via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Sent: Monday, February 9, 2026 6:08:35 AM
To: Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Subject: [SARA] Andrew Thornett Gnu Radio Group

 

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[Andrew Thornett]

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From: 'Stephen Arbogast' via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Sent: Monday, February 9, 2026 6:08:35 AM
To: Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Subject: [SARA] Andrew Thornett Gnu Radio Group

 

[Stephen Arbogast]

Andrew,

Next  GNU  Radio Group meeting   I am  willing  to  present  an overview  of  the  software  I am using..if  ok  with you   but  a  warning..   The  topic of  digital  filtering  is   a  big  one...  In   the   software  by    Marcus  Leech    he  uses  a  variable  called  split  ratio   which  divides  the  noise reduction  between   traditional  averaging  and   low   pass filtering   using  a single pole   infinite  impulse  response  filter.  This  means  the output   of the  transfer    function  is  from   - infinity to  + infinity   thus  a windowing  function is used  to   get   convergence......   This  kind of  gets    deep.   I  think    I can   talk about it without  getting  too  deep.       Let  me  know  if  you want  me to  present   my  modified    gnu radio  flowgraph.

Stephen

[Andrew Thornett]

Yes please! How long would you like?

Sent from Outlook for Android

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From: 'Stephen Arbogast' via Society of Amateur Radio Astronomers <sara...@googlegroups.com>

Sent: Wednesday, February 11, 2026 6:07:44 AM

To: Society of Amateur Radio Astronomers <sara...@googlegroups.com>

Subject: Re: [SARA] Andrew Thornett Gnu Radio Group

 

To view this discussion visit https://groups.google.com/d/msgid/sara-list/ba92c974-4da7-4aeb-a122-167ef4452dcfn%40googlegroups.com.

[Stephen Arbogast]

Just   a  few   minutes..    Here  is  a  link  to   a digital  signal processing  course  I  have  found  very  good  ...   using   Python in   Jupyter Notebook.   Warning  some  math  is required......     https://github.com/spatialaudio/digital-signal-processing-lecture/blob/master/index.ipynb