Feature: 1. Duplex Hotspot Board: It is a MMDVM hotspot digital networking box, multi mode digital voice modem, help to register international ID and open a default group, show that the firmware has been updated, using imported temperature compensated crystals, DMR format, zero frequency bias, duplex double time slot. 2. Multifunction: Support C4FM, DMR, DSTAR P25 and other digital formats, to solve the problem of inconsistent digital intercom system, to achieve multi digital system interoperability, the working frequency range: 144‑148/219‑225, (the main band) 420‑475/842‑950, with a cell phone hotspot or WiFi network networking connection, to meet you and the world's HAMs Connectivity. 3. Ethernet Connectivity: The unit comes with an Ethernet connectivity device that plugs into one of the micro USB ports. After plugging the device into an Ethernet switch, it will instantly and easily connect to your home network. For a wired connection, log on to the unit using the IP address assigned by your network router. 4. Excellent Heat Dissipation: MMDVM duplex dual slot digital hotspot board optimizes the alignment with perfect component layout, low heat generation and fast heat dissipation for long term startup. 5. Easy Charging: Mobile charger or micro USB cable connected to your computer or laptop. If you connect the hotspot to your cell phone network, the hotspot can also be used on the move in your vehicle (without USB cable). Specification: Item Type: MMDVM Duplex Hotspot Board Product Material: Aluminum Alloy Color: Silver Support Digital Format: C4FM, DMR, DSTAR P25 and Other Digital Formats Operating Frequency Range: 144‑148/219‑225, (Main Band) 420‑475/842‑950 Interface: Micro USB x 1, HD Multimedia Interface x 1, 3.5mm Sound Jack x 1, USB x 4, RJ45 x 1 Memory Card Slot: Built in 8G Memory Card Antenna: Two External Antennas. Package List: 1 x Hotspot Board2 x Antenna