High performance 32-bit ARM processor Fully tested Supports , P-25,D-Star and System Onboard to show status (Tx,Rx,PTT,Mode) Up to 10mW RF power SMA antenna connector,Antenna included Mounts cleanly on all current s including the Pi Zero The firmware is pre-loaded and is easily upgraded via software. 3D printable case available UHF 430-450 MHz,433mhz and 900MHz VHF 144 220 Opera FREQ Duplex variant of MMDVM_HS_Hat This PCB uses the MMDVM_HS . It has two ADF7021 onboard and allows for duplex operation with two time slots on . An accidentially deleted 3v3 wire has been added back to the PCB layout. , Mouser cart and stencil stay the same as for rev1.1. The upper part is TX,the lower is RX antenna. UHF+VHF SMA,antenna Modem select: STM32_HS_GPIO Set TX frequency,RX frequency TX,RX frequency had better 10M or more apart. SLOT1,SLOT2 support. Colour:As Shown Material:PC+metal Package Contents: 1 x MMDVM Hotspot Module Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.