Features: The double Duplex hotspots Board deliver operate with high precisions TCXO crystal, enabling <5% bit error rate for digital modes performances double time slot. Featuring double ADF7021 chipsets and antennas connectors, this board supports simultaneous UHF transmission (430 450MHz/144 220MHz) with LEDs, 10mW output, and pre loaded upgradable firmware. Designed for amateur radio enthusiasts and digital communication professional requiring duplex hotspots functionality in based repeater systems or experimental digital modes projects. Optimized for creating robust digital communication hubs in labs, field operate, or scenarios where double antennas signals stability and frequency error correction are critical. This board includes enhanced PCB layout with restored wiring, supports open source printable enclosures, and maintains models through GPIO modem selection. Specifications: Component: Plastic Package Includes: 1 Set Duplex Hotspots Board Module note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.