pub fn mod_test() {
let soundcard = Soundcard::new("plughw:CARD=Device,DEV=0").unwrap();
+ soundcard.set_tx_inverted(true);
let ptt = SerialPtt::new("/dev/ttyUSB0", PttPin::Rts);
let soundmodem = Soundmodem::new(soundcard.input(), soundcard.output(), ptt);
let app = M17App::new(soundmodem);