Mini MMDVM Hotspot Expansion Board Spot

Features:
Uses 32-bit ARM processor, higher performance.
Supports for such four digital amateur modes as DMR, D-Star, P25 and System Fusion.
LED indicators to indicate the status(Tx,Rx,PTT,Mode).
SMA antenna connector, up to 10mW RF power.
With pre-loaded firmware, can be upgraded via software easily.
Available for all current Raspberry Pi.
Uhf 430-450 MHz,433mhz and 900MHz.
Comes with a shell, can protect the board well.