The Yaesu FTM-400XDE Dual Band C4FM Fusion Transceiver represents a significant advancement in mobile communication technology, being the first fully compatible with the Yaesu System Fusion digital transmission system. It features a large 3.5-inch touch-sensitive colour screen and an advanced menu system that provides access to over 100 separate settings, making it user-friendly for novice and experienced operators. The transceiver operates in three digital modes—Voice and Data, Voice Full Rate, and Data Full Rate—and one analogue mode (NBFM), catering to various communication needs.

One of the standout features of the FTM-400XDE is its Automatic Mode Select (AMS) function, which automatically detects the received signal mode, allowing for seamless transitions between communication types without manual intervention. This capability enhances the user experience, particularly in dynamic communication environments. The C4FM digital mode offers superior communication quality with lower Bit Error Rate (BER) characteristics compared to traditional FDMA digital modulation schemes, positioning it as the preferred choice for professional communication devices and suggesting a solid future in digital communications.

The transceiver's digital modes include V/D Mode, which enables simultaneous voice and data communication with effective error correction, and Voice FR Mode, providing high-quality voice transmission for extended conversations. AdTheata FR Mode is also low for high-speed data transmission, making it ideal for sending large files or images. The analogue FM mode is a reliable fallback in scenarios where digital signals may falter, ensuring consistent communication even in challenging conditions. OvTheTM-400XDE is a versatile and robust option for amateur radio operators looking to enhance their communication capabilities.

Used items may exhibit minor imperfections such as scratches, dents, or discolouration, which are common due to previous usage.