The question raised on this forum about RPU and STL athorizations in the PIF. I emailed email@example.com and got this reply.
Dear Terry Cowan,
There is no need to upload the authorizations for RPU. The STLs have to be posted under a particular station's Public Inspection file.
If you have any further questions, or need additional information, please submit a help request at https://www.fcc.gov/wireless/available-support-services or call the FCC Licensing Support Center at (877) 480-3201.
FCC Licensing Support Center
8:00 AM – 6:00 PM EST, M - F
This is interesting as both RPU and STL stations are in the Broadcast Auxiliary Service.