Related Clues

• Trucker's approval
• "Message received"
• Start of a sign-off phrase
• CBer's affirmative
• CBer's sign-off
• "Roger"
• CB sign-off
• Cop's signoff
• Police radio affirmative
• "Understood"
• Radioer's acknowledgment
• Radioer's acknowledgement
• "Copy that"
• Clues to magnificent Spain and Portugal, I understand