Raspberry Pi duplex MMDVM hotspot is a multimode digital access point: D-Star, DMR, C4FM, P25, POCSAG and NXDN,
supports amateur radio bands VHF 144-148Mhz and UHF 430-450Mhz,
with 10mW maximum.
MMDVM Duplex hotspot for Amateurs （License request,callsign, DMR ID）
Support MMDVM mode DMR/YSF/P25/NXDN/DSTAR/POCSAG
Double timeslot in DMR mode, act as a mini Digital voice repeater.
Support VHF/UFH, frequency range: 144MHz-148MHz, 420MHz-475MHz,842MHz-950MHz (depend on ADF7021 and TCXO, HAT's Firmware Amateur radio brand license limit)
High-quality ECS TCXO, stable with low BER.
Support Raspberry Pi 3B, 3B+, Pi ZERO, Compatible with NanoPi NEO, Orange Pi, Compatible to BlueDV(Required to add USBtoTTL or Bluetooth model)
It comes complete, fully assembled and tested before shipment, with a PiStar image mounted on the 8GB SD card provided.
Duplex Model_A1 : Acrylic _L case hotspot with 3.5'' Screen（4.3'' Screen optional ）
1x Duplex hotspot board with ANTs
1x Acrylic "L" Case for Nextion 3.5'
1x Acrylic Protect Shield board for MMDVM HAT
1x TF Card
1x Nextion 3.5' ,NX4024T032 (Optional 4.3'' Nextion Screen)
1x Raspberry Pi
1x USB Power supply wire
1x full set of component:
1x Heat sink
Be sure to use a qualified power supply 5V2A, non-conforming power will lead to bit error rate(BER) instability, Overvoltage will burn this NanoPi and HAT！ (package not including charger adapter)