Suggestions before order:
[The European Union (EU) countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, and Sweden.]
Fast deliver with IOSS Number pre-tax 20%, please buy in following link, any questions please contact: bi7jta@gmail.com https://www.aliexpress.com/item/1005004914744230.html
Descriptions:
Work in Digital mode DMR YSF P25 M17 NXDN D-STAR POCSAG ,
DMR work TS1/TS2, YSF P25 M17 NXDN D-STAR RX shift TX
VHF/UHF, frequency range: 144MHz-148MHz, 420MHz-475MHz,842MHz-950MHz,
*Avoid satellite frequency: 145.8~146.00 MHz , 435~438.000 MHz
** Ceramic antenna is 433MHz, VHF support is poor, if you want to use VHF, I recommend to buy Duplex HAT with 2x SMA antennas

Upgrade firmware use Pi-Star SSH mode , ST-LINK
Support Raspberry Pi Zero, 2W, 4B, 3B, 3B+ 4B 5B, NanoPi, Orange Pi
Support software: Official Pi-Star, WPSD, J-STAR(Desktop OS),VirtualBox,PVE,ESXi x86
Two TimeSlots in DMR mode, act as a mini Digital voice repeater.
High-quality TCXO, stable with low BER.
Wiki : https://www.bi7jta.org/wiki
Support: Facebook Message: https://www.facebook.com/winters.cn
YouTube: https://www.youtube.com/shorts/8g7f2p-CfA0

USBtoPCAdapter: for use PC Linux Windows, VMVare Pi-Star, BlueDV replace Raspberry Pi Pi-Star OS.

Diagram, USBtoTTL witout A+ extend

YouTube Preview
Demo 01
Demo 02