• Aiphone America
  
• Bendix-King Communications
  
• ICOM America Inc.
  
• Maxon America Inc.
  
• Motorola Inc.
  
• Ritron Inc.
  
• Talk-A-Phone Co.
  
• Tekk Inc.
  
• Telex Communications Inc.
  
• Uniden America Corporation
  
• Yaesu U.S.A.