Matthew, I now understand what you mean, because I also have the problem with baud rate on a raspberry pi running raspbian with kernel 4.1.19+.
What is working on another computer with ubuntu, doesn't work on the RPi. The baud rate 128000 can not be set. I will investigate a bit and see if I can make it work. I'm not sure if it works due to a newer kernel or if it's something else. I've tried the weewx-wmr89 <https://github.com/matthewwall/weewx-wmr89> driver and it worked on my computer, but the received data wasn't the same as on the weather station display. I will investigate this when I have more time. Maybe I just have the weewx configuration messed up.
