Related Clues:

• Police car feature
• Ham, for one
• Donna Summer's 'On the --'
• Pie, perhaps
• Dashboard device
• Communication device
• Some waves
• Crystal set
• Police cruiser need
• Ham need
• FCC concern
• You may walk with it, man
• It has bands with music
• The 'R' of N.P.R.
• You can carry a tune with this