Frequency gives group scope (9)
I believe the answer is:
bandwidth
'frequency' is the definition.
(I know that bandwidth is a type of frequency)
'group scope' is the wordplay.
'group' becomes 'band' (band can mean a group of people).
'scope' becomes 'width' (I can't justify this - if you can you should believe this answer much more).
'band'+'width'='BANDWIDTH'
'gives' is the link.
Can you help me to learn more?
(Other definitions for bandwidth that I've seen before include "Informal capacity" , "Particular range of frequencies" , "Range of transmission frequencies" .)