This Kenwood Communication Receiver QR-666 is a high-quality device that is compatible with Kenwood ham radio receivers. It is a reliable and efficient communication receiver that operates at 12-15VDC and 230volt mains. The unit quantity is one and it is designed to fit the Kenwood Receiver QR-666. The Kenwood Communication Receiver QR-666 is perfect for radio communication enthusiasts who are looking for a reliable and efficient device to enhance their communication capabilities. It is designed for use with Kenwood ham radio receivers and offers a range of features that make it a great choice for this purpose.