For Raspberry Pi Zero W 0W 2W 3B+ 4B 4B+ Duplex MMDVM Hotspot Board UHF VHF
1 Duplex MMDVM hotspot board (excluding other products). Applicable models: For Raspberry Pi Zero W 0W 2W 3B+ 4B 4B+. Radio Frequency : in duplex mode,support uhf 430-440MHZ, in simplex mode support both uhf 430-440MHz and vhf 140-150MHz.