Global Settings

Syntax

The following shows all global parameters with optional ones commented out and their default values shown:

# fft_size = 512;
# multiple_demod_threads = false;
# multiple_output_threads = false;
# pidfile = "/run/rtl_airband.pid";
# stats_filepath = "";
# localtime = false;
# log_scan_activity = false;
# shout_metadata_delay = 3;
# tau = 200;

devices: ( ... );
mixers: { ... };    # optional

Explanation of keywords

fft_size (integer, optional) - See Tweaking sampling rate and FFT size.
multiple_demod_threads (boolean, optional) - See Multithreaded operation.
multiple_output_threads (boolean, optional) - See Multithreaded operation.
pidfile (string, optional) - See Changing PID file location
stats_filepath (string, optional) - See Channel usage statistics
localtime (boolean, optional) - If output filename timestamps should be in UTC (default) or local timezone (set to true)
log_scan_activity (boolean, optional) - See Logging activity of scanned frequencies.
shout_metadata_delay (int, optional) - Number of seconds before first metadata tag, valid range 0-32 inclusive.
tau (int, optional) - Global value, can be overridden at a per-device and per-channel level, see NFM deemphasis

For configuring devices see:

For configuring mixers see Configuring mixers.

Overview
- Supported Platforms
- Features
Installation
- Local Build
- Docker
Configuration essentials
- Grammar basics
- General configuration file structure
- Global Settings
- Configuring devices
  - RTLSDR
  - MiriSDR
  - SoapySDR
- Configuring channels
  - Multichannel mode
  - Scan mode
- Configuring outputs
Configuring optional features
Running
Troubleshooting
Configuring auxiliary software to work with RTLSDR-Airband
- Setting up your own Icecast server
- Configuring PulseAudio server