I have had some success with a QAM implementation using the RR. Thanks for the suggestion. (see working QAM.png)
However, now I wish to create constellations without filtering, so Im using the chunk to symbol mapping block which seems straight forward.
But I now get no output from my Audio Sink....which works fine with other GRC code.
Can you see anything which could cause an issue ? (see no outputQAM.png)
i tried feeding the chunk block from a random source (0-4) to emulate the Pack K bits source...but it still did not outout.
Thanks again.
