This is a CATS RX-only I-Gate which can use a cheap SDR receiver to decode CATS packets. It prints them to the terminal and optionally forwards them to FELINET. Out of the box, it works with the RTL-SDR.
## Debian & Derivatives (Ubuntu, Raspbian, etc.)
### Building
To build the software, you will need to install [Rustup](https://rustup.rs/). You'll also need git. After these are installed, restart your terminal, or open a new one. Then run these commands:
```bash
sudo apt install rtl-sdr
cargo install cargo-deb
git clone https://gitlab.scd31.com/cats/sdr-igate
cd sdr-igate
git pull
cargo deb
```
The resulting deb package will placed in `target/debian/cats-sdr-igate-decoder_VERSION.deb`
### Installing
Once built, the package can be installed with `sudo dpkg -i target/debian/cats-sdr-igate-decoder_VERSION.deb`, replacing `VERSION` with whatever version and architecture was built.
### Configuring
The configuration for the I-Gate lives in `/etc/cats-sdr-igate/config.toml`. Make sure to update this before using the utility - most importantly, the callsign must be configured. Optionally, you can remove the entire `[felinet]` section if you don't want to forward packets to the network.
### Running
Start the service with `sudo systemctl start cats-sdr-igate`. If you want it to start automatically at boot, you can run `sudo systemclt enable cats-sdr-igate`.
## Other
### Building
To build the software, you will need to install [Rustup](https://rustup.rs/). You'll also need git. After these are installed, restart your terminal, or open a new one. Then run these commands:
```bash
git clone https://gitlab.scd31.com/cats/sdr-igate
cd sdr-igate
git pull
cargo build --release
```
### Configuring
Copy the `config.example.toml` file to `config.toml`. You can either keep it in the current directory or move it to `/etc/cats-sdr-igate/`. Modify this file - be sure to add your callsign, or remove the `[felinet]` section if you don't want to forward packets to the network.
### Running
Make sure you have `rtl-sdr` installed. As a sanity check, verify the `rtl_fm` command exists.
