Related Clues:

• Ham, for one
• Donna Summer's 'On the --'
• Half of an audio cassette
• 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
• Cassette half
• Half of a record
• The 'R' of N.P.R.