[Tetrapol-kit] freeze tetrapol-tx

Hello

We have trouble using tetrapol_tx with gnuradio 3.10/3.11 . Transmit is freezing for non reason . Hackrf is the latest firmware version . Working fine with codec . Working fine with gnuradio 3.7 . Sometimes it works fine without freezing but most of the time we have to restart . Could be helpful for us to transmit with the limesdr mini first version,plutosdr and ettus B200. Thanks for help

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