If you've copied and pasted the recordings from your scanner to a folder on your computer, using Windows Explorer can reveal some of the information noted above. I believe it comes from the file headers.
The System Name is in the Contributing Artists column.
The Department Name is in the Genre column.
The Channel Name is in the Title column.
I was of the belief that most of the metadata in the x36 WAV files is in fields not supported by MM. That was my experience when trying to decipher 436 files early after the 436 was released.
I also believe that the x36 audio files have some issues being played back due to non-standard headers. Only certain players like VLC which can handle lots of non-standard formats can handle them.
WTF, just imported a folder from my 436HP, seems that the Tags are pretty much there, but I have the same version of MM and no audio. MM seems to step though the files, but silence.
What the heck did Uniden do here on the X36HP?? Same version MM works on my HP1E files no issue.
There's a subtle difference in the header if you look at it with a text or hex editor. I may try to hex-edit a file and see if it makes a difference.
EDIT: What I was aiming to do doesn't work. Having said that, VLC plays the x36HP files fine, but that means playing them one-at-a-time from Windows Explorer rather than playing them with all the metadata (fields) visible in MM.
I think perhaps the header data for the x36HP files is not quite up to the WAVE spec and VLC is just lenient on playing them back.