Visit Radio Reference For Frequencies You Will Need: “Click Here”

sudo apt update
sudo apt install git

Let's Download The Software:

git clone https://git.osmocom.org/op25
cd op25

To Install OP25:

./install.sh

After The Install Let's Install A Few Things:

sudo apt install gnuplot-x11
pip3 install sqlalchemy[asyncio]

cd Into The Following Dir:

cd op25/op25/gr-op25_repeater/apps

Once In The App Dir, Run The Following Command:

sh install-sql.sh

cd Back To The Pi Dir:

cd

Time To Add A Line To The .bashrc File:

sudo nano .bashrc

Now At The Bottom Of The File Add The Following Line And Save:

export PATH=/home/pi/.local/bin:$PATH

Sample Command To Start The OP25 Software: "Current Gain Is Set At 30 And A Sample Rate Of 960000"

./rx.py  --args 'rtl' --gains 'lna:30' -X -T trunk.tsv -q 0 -S 960000 -U -P constellation -l 'http:0.0.0.0:8080' -2 -v 10 2> stderr.2

Another Sample Command:

./rx.py  --args 'rtl' --gains 'lna:30' -X -T trunk.tsv -q 0 -S 960000 -U -P "symbol,fft" -l 'http:0.0.0.0:8080' -2 -v 10 2> stderr.2