Range of radio frequencies (4)

I believe the answer is:
band
(Other definitions for band that I've seen before include "Pop group; stripe" , "Musicians - gang" , "troop" , "Group; frequency range" , "Orchestra" .)
I believe the answer is:
band
(Other definitions for band that I've seen before include "Pop group; stripe" , "Musicians - gang" , "troop" , "Group; frequency range" , "Orchestra" .)