AFAIK the constellation sink just can't do QAM. The timing recovery loop is uses only work for PSK type modulation. (so yeah for 4 QAM is works because it's the same as QPSK)
Cheers, Sylvain _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
