ITEM NAME:V1.7 Mmdvm Hotspot Pi-Star Support P25 Dmr Ysf For Raspberry Pi + Antenna K4N3 V1.7 Mmdvm Hotspot Pi-Star Support P25 Dmr Ysf For Raspberry Pi + Antenna K4N3 PLS note: the RXofffset is : -475(minus 475) High performance 32-bit ARM processor Fully tested Supports DMR, P-25, D-Star and System Fusion Onboard LEDs to show status (Tx, Rx, PTT, Mode) Up to 10mW RF power SMA antenna connector, Antenna included Mounts cleanly on all current for Raspberry Pi’s including the Pi Zero The firmware is pre-loaded and is easily upgraded via software. Open source 3D printable case available uhf 430-450 MHz,433mhz and 900MHz VHF 144 220 Opera FREQ (not main band) Note: not include the raspberry pi The latest firmware is pre-loaded colour:green Material:Metal + PC Package Contents: 1 * MMDVM Hot SPOT Module 1 * Antenna