Hello, I am very involved in many educational projects with the International Space Station. In these projects, I need to use "rigctld" to control my receiver and correct Doppler effects. I use the ICOM PCR-100 model with GPredict software. However, with this receiver, when you take control of it with HAMLib, the volume of the output sound is too low. To control the receiver, I use this command on linux : rigctld -v -m 402 -r /dev/ttyUSB0 -s 38400 -t 4532 -C stop_bits=1 And a kind of this one on...