librtlsdr-docker

Docker image and bash scripts for working with librtlsdr. TCP port 1234 is exposed for convenience of working with the rtl_tcp utility.

Build

$ docker build -t librtlsdr .

General Usage

The docker --device argument is required to give your container access to the USB devices connected to your host machine, for example running rtl_eeprom works like this:

$ lsusb | grep "Realtek.*RTL"
Bus 002 Device 008: ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T
$ docker run \
    --device /dev/bus/usb/002/008:/dev/bus/usb/002/008 \
    --rm -it librtlsdr \
    rtl_eeprom -d 0

Radio Witness Usage

At Radio Witness we're really only concerned with the rtl_tcp utility, in general our workflow for using it goes like this:

1. assign ascending serial numbers to connected RTL devices -> $ ./serialize.sh
2. configure environment variables -> $ cp .env-example .env
3. spawn one rtl_tcp process for every RTL device -> $ ./rtl_tcp.sh

Environment Variables

• DOCKER_NET - docker network name
• RTL_GAIN - gain in dB, use 0 for auto
• RTL_PPMS - comma separated PPM correction specs in the form of <serial>:<ppm>
• RTL_BUFF_LEN - length of USB transfer buffers in units of 512 bytes
• RTL_BUFF_NUM - number of USB transfer buffers to fill per read loop
• RTL_LL_NUM - max number of USB transfer buffers to queue for TCP

License

Copyright 2017 Rhodey Orbits, GPLv3.