Simulink receiver block the "source gain" can operate in 4 modes:
AGC Slow Attack — Use this mode with signals whose power varies slowly over time.
AGC Fast Attack — Use this mode with signals with a rapidly changing power level.
Dialog — Specify the gain via the Gain (dB) parameter.
Input port — Specify the gain in an input port that is added to the Pluto Receiver block.
I am trying to operate the receiver in mode Dialog or Input port, it looks like these modes are not working correct.