Some Suggestions before order
[EU countries, Not including Germany]
Fast deliver with IOSS Number Pre-TAX , please buy in this link,(Door to door not need clear customs)
https://www.aliexpress.com/item/1005004914744230.html
Descriptions:
Work in Digital mode DMR YSF P25 NXDN D-STAR POCSAG ,
DMR work TS1/TS2, YSF P25 NXDN D-STAR RX shift TX
VHF/UHF, frequency range: 144MHz-148MHz, 420MHz-475MHz,842MHz-950MHz,
*Avoid satellite frequency: 145.8~146.0 MHz , 435~438.000 MHz
Upgrade firmware use Pi-Star SSH mode , ST-LINK
Support Raspberry Pi Zero, 4B, 3B, 3B+, NanoPi, Orange Pi
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: bi7jta@gmail.com , Facebook Message: https://www.facebook.com/winters.cn
BPi-M2_ZeroW: With Customized Pi-Star .

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