Sink and Source MIMO Errors

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cubby
Posts: 1
Joined: Fri Dec 19, 2025 7:36 pm

Sink and Source MIMO Errors

Post by cubby »

I am having trouble with my flow graph when trying to run an osmocom source and sink in the same flow graph using GNU radio companion 3.10.12.0 (Python 3.12.9). It is similar to https://nuand.com/forums/viewtopic.php?t=3058 .

I get the error:

Code: Select all

\Lib\site-packages\gnuradio\gr\top_block.py", line 116, in start
    top_block_start_unlocked(self._impl, max_noutput_items)
RuntimeError: resolve_port: hierarchical block 'sink_impl': input 1 is not connected internally
Has anyone been able to run RX1 and TX2 simultaneously in the same flow graph? Any suggestions are appreciated.
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