Also select correct COM port (on my PC it was COM5. Set CAT RTS to DISABLE (unless you do that you may have a problem getting data thru)ħ) Set the rate to 38400 in TRX-manager (setup menu) and select FT-891. (Note: the 891 has dual serial ports, it does not have an USB soundcard).Ģ) Reboot the PC and check that you see two serial devices in your Device manager (type device manager when clicking the start button)ģ) Hold F on the FT-891 in a couple of seconds (long click) I have successfully got FT891 running under TRX-manager: ġ) Install the dual serial port driver from Yaesu website.