See page on AVAPS wiki: SWEX Radiosonde specific metadata collection
That page contains info on the station numbers, etc to use. It also has the instructions for setting up the TEMP and BUFR headers properly.
Some of the entries on that page say to refer to the SWEX data management plan, which is here: https://docs.google.com/document/d/1yqmy-NMit_oxbVKhBVKrJlMvIBJYl3hxepl2JK-dr-c/edit?usp=sharing
Here is the settings file to restore settings from: https://wiki.ucar.edu/download/attachments/326733716/mw41SettingsArchive_2020-02-21T234842.xml?version=1&modificationDate=1582329015575&api=v2