Related Clues:

• The 'R' of N.P.R.
• Navigation device
• Tracking letters
• You can carry a tune with this
• Cell feature
• Video recorder, briefly
• Machinery part
• 'Deep Space Nine role'
• Rotating part
• Keillor's medium
• Speed of rotation measurer, briefly
• Ham carrier
• Engine piece
• Taxi accessory
• River flowing into the Ouse