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duggabe / gr-control

Modular transmit / receive station control
GNU General Public License v3.0
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fix for NFM_rcv.grc file #2

Closed tempacct791 closed 3 years ago

tempacct791 commented 3 years ago

File: https://github.com/duggabe/gr-control/blob/maint-3.8/Receivers/NFM_rcv.grc Line 42: low_cutoff_freq: '-3000' Need to replace '-3000' with '300' Also for all other branches

duggabe commented 3 years ago

I think you are confusing channel filtering with audio filtering. The filter I used could be replaced with a Low Pass Filter and it could use Real taps instead of Complex taps. That would actually simplify it. This was a carry-over from a WBFM stereo flowgraph. You are welcome to fork the repo and make your own version.

For additional information, see https://pysdr.org/content/filters.html#

tempacct791 commented 3 years ago

thanks for your reply. my original post didn't come out right. i just started learning gnuradio, and one of the very first tutorials links to your github files, https://wiki.gnuradio.org/index.php/Simulation_example:_Narrowband_FM_transceiver, but GRC wouldn't run the file in its current state. so i thought i might be able to help the next newbie.