A span of FM is actually from 63 to 108, and the length range is not enough, which is particularly crowded. I usually feel tired when I use 76- 108, so I'd better use 87- 108 or 88- 108 (actually 87- 108).
The first paragraph is full of TV sounds, FM high-end fake signals and less commonly used campus bands, which are not used at ordinary times.
Just make a mark that you can read.
If it is a student party, buying a number is more intuitive. Suggest PL-606 or PL-505 or DR-920 or DR-9 10.