CWSHARI (SA818 Ham Allstar Radio Interface) is a ham construction project designed by N8AR that implements a Raspberry Pi hosted Allstar node Use any analog radio you have no need to get a Digital radio Take a look at the RT85 here on this sit in new radios
Features
This is with Pi3 B +
Fan cooled in a 3D case that helps keep it cool.
Uses the Cmedia CM119B or CM108B USB audio IC
Uses a NiceRF SA818 UHF embedded radio module
500 to 1000(default) milliwatts RF output power
Small, portable with self contained radio and antenna
Radio settings changed using a program running on the Raspberry Pi.
Required Hardware:
1. A micro SD card – 16GB or larger, Class 10 or better is recommended.
2. A power supply for the Pi-This should be a power supply intended for the version of the Raspberry Pi. These supplies typically provide 5.1 to 5.2 VDC to the Pi. Current requirements vary with version. Numerous problems with Allstar Nodes have been traced to inadequate power supplies.
SHARI Allstar Node Setup and Configuration Guide (In short version)
1．Create an Account with Allstar
2．Create a Server and Request a Node number
3．Software
4．Configuring Allstar
5．Configuring SimpleUSB-Tune-Menu for SHARI
6．Connecting and Configuring SHARI
7．Setting Receive and Transmit Voice Levels
8．Testing DTMF Decoding
9．Enabling the COS LED
There are a lot of videos on YouTube that are EZ to follow for your set up I would say find one that tells you about ASL3 that is the best and EZest one to use.
Take a look at (120) Ham Radio Crusader - YouTube