Zygmunt Szumski SP5ELA. Warsaw DX Club. sp5ela@gmail.com Yaesu FT-991 transceiver configuration under N1MM software. Only program as to my knowledge for today (August 2015) fully

compatible with Yaesu FT-991 transceiver is N1MM. (N1MM Logger. Contest Logging Software. Free Software for Phone, CW and Digital Modes). It concerns research case of configuration of FT-991 USB port with standard USB cable to computer USB port under Microsoft Windows 7.

**Chapter 2. Drawn fragment of documentation 10.21. FT-991.

The radio firmware has been updated several times. Be sure to install the latest firmware. Due to the design, this radio can only be used in SO1V or SO2R modes. Setup information and notes:

o Install the Silicon Laboratory drivers onto your computer per the Yaesu website instructions.

o Install a Standard USB cable between the FT-991 and your computer. If the Silicon Labs drivers were successfully installed, you will have an enhanced port and a standard port showing in device manager.

o Set the following menu items on the ft-991. Note: the menu #’s may change with future firmware updates.

012 keyer type off 031 CAT rate 38400 032 CAT Tot 1000 033 CAT rts disable 060 PC keying dtr 071 Data PTT sel rts

o Select the hardware tab. Under Port, select your enhanced port. Under radio select FT-991. Click on SET and input 38400,N,8,2 always off, always off. Select Radio NR1. Place a check mark in Enable Both Hardware and Software.

FT-991 Menu

Default value FT-991 MENU Function description

N1MM set N1MM set by SP5ELA

012 KEYER TYPE off off 031 CAT Rate 38400 38400 032 CAT TOT 1000 100 033 CAT RTS Disable Disable 060 PC Keying DTR DTR 071 DATA PTT Select RTS RTS *SP5ELA default. Under Port, select your enhanced port. Under radio select FT-991. Click on SET and input 38400,N,8,1 always off, always off. Select Radio NR1 - FT-991. Place a check mark in Enable Both Hardware and Software. With Silicon Labs Drivers we have two ports in Windows system: enhanced port and standard

port. In case of FT-991 as it describes over enhanced port is responsible for main CAT communication with transceiver, standard port is responsible for PTT and keying lines. On left - screen shot taken during installation of CP210x Silicon Labs drivers under Microsoft Windows 7 Ultimate 64bit.

** http://n1mmplus.hamdocs.com/tiki-index.php?page=Supported+Radios&structure=N1MM+Logger+Documentation#FT-991

N1MM configuration screen shots

N1MM main panel

N1MM hardware tab.

N1MM hardware tab - close look.

N1MM hardware tab. COM12 (enhanced port) detailed parameters.

N1MM hardware tab. COM12 (enhanced port) detailed parameters. Close look.

N1MM hardware tab. COM13 (standard port) detailed parameters. PPT and keying lines.

N1MM hardware tab. COM13 (standard port) detailed parameters. PPT and keying lines. Close look. Final comment. Thanks to Peter SQ5JUP for inspiration and indications concerning configuration. SP5ELA, Warsaw, August 24, 2015