Hello, everyone, and I trust most of you will indulge a GRC newbie.
After reading some of the online Gnuradio docs, I'm puzzled by what's
inside building blocks that appear in the GRC block tree panel. If I
select "WBFM Receive" from the "Modulators" tab, for example, I know
this defined by the analog_wfm_rcv.xml file in my
/usr/local/share/gnuradio/grc/blocks directory. When I examine this 672
byte file with a text editor, the what entries are there make sense but
how can this block define an entire FM receiver (Filters, FM detector,
etc) from I & Q signal inputs to baseband audio? It doesn't seem
possible. What am I overlooking?
The other question is whether any of these building blocks were
themselves created using GRC signal flow graphs and how to display them
as such. Thanks for your time and comment. Sincerely,
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