Feature: 1.Advanced Compatibility Performance: 2.Enhanced Connectivity Power: The DUPLEX MMDVM hotspot boasts up to 10mW RF power and comes with an SMA antenna connector, including an antenna for superior signal strength and range. It's designed to cleanly fit for Raspberry Pi models, including for Pi Zero, making it an ideal addition to your amateur radio setup.3.Intuitive Operation Monitoring: With onboard LED indicators displaying status for Tx, Rx, PTT, and mode, the MMDVM DUPLEX hotspot board offers easy operation and monitoring of your digital communications. This user-friendly feature allows operators to quickly ascertain the operating status of their hotspot at a glance.4.Easy Installation Firmware Updates: The MMDVM DUPLEX hotspot module dual hat comes pre-loaded with firmware that can be easily upgraded through software, ensuring your device remains up to date with the latest features and improvements. Its compatibility for Raspberry Pi models ensures a straightforward installation process.5.Customizable Versatile Frequency Range: Offering support for UHF 430-450 MHz, 433 MHz, and 900 MHz, the MMDVM hotspot board is designed to meet a wide range of communication needs. Additionally, it provides an open-source 3D printed case design, allowing for customization and protection of your device. Whether you're communicating locally or exploring long-range digital modes, this hotspot board has you covered.