Digital Interface to My FT-950- part 4

 This has been a long journey but now My set up seems to be working well. I've discussed the many hurdles getting to this point so onward with the settings discussion. I have a Yaesu FT-950  , Yaesu SCU-17 digital interface and a Dell Windows 11 laptop. The SCU-17 interfaces to the radio with a serial DB-9 cable,6 pin DIN plug and to the PC with a USB interface. It needs drivers installed for the virtual comm ports on the Laptop and the recommended are from Silicon Labs- dual CP210x USB to UART bridge driver which can be found on their website.

 After drivers are installed the ports need to be configured and for My application I have set them both, the enhanced port and standard port to 38400 baud,8,none and 2 stop bits.It is also a good idea to turn power management off for these ports and that is found under device manager and comm port settings menus on the laptop. I also have the FT-950 setup to mirror the laptop comm ports -38400 and CAT TOT-1000. The rest of the CAT menu and RTTY choices are left at default. I also have flow control set to none on laptop comm ports but I'm not totally sure this is correct--but it works for now.

The SCU-17 internal jumper I have set to PTT-DTR and FSK-RTS. This is not the default setting but  will work as long as EXTFSK64 mirrors this setting.I changed jumper setting with old Windows 10 PC trying to see if that change would help it to key radio and left it that way.

 The next program is MMTTY ver 1.68a. There might be a newer version but this one works OK.I found the most important parameter using FSK is making sure under the AFC/ATC/PLL menu that shift is set to FSK and of course PTT is using EXTFSK64. The soundcard also needs to reference  both TX and RX the USB audio codec.

N1MM is the logging/contesting program I use and it interfaces with MMTTY as its Digital engine. Using CAT from the radio requires the enhanced com mport and PTT/FSK the standard. These settings need to match and for My setup Com 3 is CW/other- 38400,n,8,2 with DTR and RTS on. My com 4 which is the standard port is set to Digital with DTR-PTT and RTS -CW.

 With all these programs there are many variations for ease of use and depending on hardware many settings. I read the manuals for each one and adjusted these accordingly. The above settings seem to be the ones needed using a Yaesu FT-950 ,SCU-17 and a Windows 11 laptop. Hope this helps. I might need to edit this description some so check back later....

73--Tim