OLED display

High-grade aluminum  alloy housing with speedily heat dissipation
Support MMDVM mode:  DMR/YSF/P25/NXDN/DSTAR/POCSAG 
Support upgrade  online
Frequency range:  VHF:144MHz-148MHz, UHF:420MHz-475MHz, 842MHz-950MHz (depend on ADF7021 and  TCXO, HAT's Firmware Amateur radio brand license limit)
High-quality TCXO,  stable with low BER.
With both inner  433MHz Ceramic antenna and SMA interface, work perfectly in UHF and VHF.
Humanized design,  saving space. 
Design for RPi 3B/B+  ,compatible with Pi ZERO, NanoPi NEO, Orange Pi, Compatible to BlueDV(Required  to add USBtoTTL or Bluetooth model)

Note:The Walkie-Talkies in the  pictures are only for demo.

Package Details

1x RpiZW_HAT contains 5CM right angle antenna
1x 0.96 inch OLED screen.
1x Raspberry Zero W, with heat sinks and needle  rows.
1x SanDisk or TOSHIBA TFCard 16G or 8G,
1x USB Power Line
1x Aluminum Alloy Case