rtl-sdr

https://osmocom.org/projects/rtl-sdr/wiki
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rtl-sdr is a Software Defined Radio (SDR) project that enables DVB-T dongles based on the Realtek...
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### Build and Install gr-osmosdr

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

After configuring with CMake, build and install the gr-osmosdr components. Ensure you run ldconfig to update shared library links.

```bash
make
sudo make install
sudo ldconfig

```

--------------------------------

### Start rtl_tcp Server

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Start the rtl_tcp utility to act as a spectrum server, allowing remote access to the RTL-SDR device. Specify the IP address and optionally the listen port.

```bash
rtl_tcp -a 10.0.0.2

```

--------------------------------

### Build RTL-SDR with Autotools

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Standard build sequence using autotools and command to install udev rules.

```bash
cd rtl-sdr/
autoreconf -i
./configure
make
sudo make install
sudo ldconfig
```

```bash
sudo make install-udev-rules
```

--------------------------------

### Build RTL-SDR with CMake

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Standard build sequence using CMake, including an optional command to install udev rules.

```bash
cd rtl-sdr/
mkdir build
cd build
cmake ../
make
sudo make install
sudo ldconfig
```

```bash
cmake ../ -DINSTALL_UDEV_RULES=ON
```

--------------------------------

### Clone gr-osmosdr Repository

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Clone the gr-osmosdr repository to build the Gnu Radio source. Ensure you have a recent version of Gnu Radio installed.

```bash
git clone https://gitea.osmocom.org/sdr/gr-osmosdr
cd gr-osmosdr/

```

--------------------------------

### Configure Build with CMake

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Create a build directory, navigate into it, and run cmake to configure the build. CMake will output a summary of enabled/disabled components.

```bash
mkdir build
cd build/
cmake ../

```

--------------------------------

### Record Samples with rtl_sdr

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Use the rtl_sdr command-line utility to record samples to a file or forward them to a FIFO. Ensure you have appropriate device access rights.

```bash
./rtl_sdr /tmp/capture.bin -s 1.8e6 -f 392e6

```

--------------------------------

### Checkout gr3.6 Branch

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

If building for the Gnu Radio 3.6 series, switch to the gr3.6 branch after cloning the repository.

```bash
git checkout gr3.6

```

--------------------------------

### Clone RTL-SDR Source Code

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Command to retrieve the rtl-sdr repository from the Osmocom Gitea instance.

```bash
git clone https://gitea.osmocom.org/sdr/rtl-sdr.git
```

--------------------------------

### Receive Wide-band FM Signals

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Commands to capture and pipe wide-band FM audio to system players on Linux or macOS.

```bash
rtl_fm -f 96.3e6 -M wbfm -s 200000 -r 48000 - | aplay -r 48k -f S16_LE
```

```bash
rtl_fm -f 90100000 -M wbfm -s 200000 -r 48000 - | play -r 48000 -t s16 -L -c 1  -
```

--------------------------------

### Test Maximum Samplerate with rtl_test

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Determine the maximum samplerate your machine can handle without sample loss by using rtl_test -s. Adjust the rate downwards until no samples are lost.

```bash
rtl_test -s 3.2e6

```

--------------------------------

### Test RTL-SDR Tuning Range

Source: https://osmocom.org/projects/rtl-sdr/wiki/Rtl-sdr

Use rtl_test -t to check the possible tuning range of your RTL-SDR device. The range may vary depending on the device and temperature.

```bash
rtl_test -t

```
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