Still some radio interference? (6)
I believe the answer is:
static
I believe this is a double definition.
'still' is the first definition.
(static can mean still or not moving)
'some radio interference?' is the second definition.
(I've seen this in another clue)
(Other definitions for static that I've seen before include "Still - radio interference" , "Atmospheric disturbance" , "Not moving - electrical interference" , "Cast it (anag) - unmoving" , "Unmoving, unchanging" .)