For Raspberry Pi MMDVM P25 DMR YSF Hotspot Antenna OLED WIFI Router DIY Kit Black Case Note: This is a DIY assembling kit of MMDVM Hotspot kit, NOT a finished one, you need to install it by yourself. The firmware is pre-loaded and can be easily upgraded through software. Please DO NOT update the firmware by yourself. The RX and TX frequency should be set 10 meters or more apart. Features: High Performance: 32bit ARM processor allows stable and powerful performance. SMA Detachable Antenna: Helps to receive strong and clear signal, support 430-450MHz, 433MHz, 900MHz UHF and 144 220 Opera FREQ VHF. OLED Display Screen: Always show you the system status, such as transmitting status, receiving status, PTT, Mode, etc. System Fusion: Supports digital amateur modes DMR, P25, D-STAR and YSF. Easy e: Can be easily installed on all the current for Raspberry Pi, including for Pi Zero. Specification: Processor: 32bit ARM Frequency:   430-450MHz, 433MHz, 900MHz UHF   144 220 Opera FREQ VHF Display Screen: OLED RF Power: 10mW Modulator/ Demodulator Set: STM32_HS_GPIO Package Size: Approx. 10 x 8 x 6cm / 3.9 x 3.1 x 2.4in Package Weight: 118g   Package list: 1 * MMDVM Hotspot Module 1 * For Raspberry Pi Zero 2 * Antenna 1 * OLED Screen 1 * TF Card (8G) 1 * Case 1 * Set of Screws 1 * Set of Screw Nut