TKR850 TKR820 Full Assembled MMDVM Repeater with BPI-M2 Pi-Star OS, 1G RAM DMR/YSF/P25/NXDN/DSTAR/POCSAG ,LAN WiFi HDMI USART - AliExpress
Repeater Controller - BATC Wiki
Amazon.com: youyeetoo ENC1-V3 4K HDMI Encoder&Decoder for Live Streaming, HDMI Video Capture for Compatible Multi-Platform, SRT and NDI Supported, Multi-Scenario Equipment Encoder (Screen Recorder/Broadcaster) : Electronics