I had considered the RT97S simply because its a self contained unit and even with its low output power seems to do a great job with the components its assembled from as a whole. Not to mention, its advertised as having a part 95E grant. There is plenty of legacy Motorola or other radios used as part of older part-90 systems, so I don't think its necessarily an issue, but the lack of a wideband emissions grant peaked my interest and wanted to see if anyone else had noticed it or possibly had an explanation.
I googled for hours and couldn't find anything on it. I found plenty of info specifying it was capable of Narrow or Wide emissions, but nothing indicating an actual grant existed anywhere or that anyone had discovered the same thing. Same with any other Retevis product. I also found it interesting that buytwowayradios doesn't appear to sell anything marked Retevis for GMRS.