The attenuation of TX1&TX2 didn't work in my block. I've set the value 10dB, but when I run the transmitter.grc, the block could run normally, but there isn't any attenuation in my transmitter just like the picture as follows. And I want to know the relation of amplitude between transmitter and receiver. For example， while the amplitude of tx_single is30000，and the “gain mode” in receiver is “slow”，Does the max value of rx_signal be limited？Because I could see a constant amplitude in the receiver although I improve the amplitude of tx_signal exceed 30000.
Thank you very much！