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RTL SDR

AIS-catcher [-d serial number] -gr [setting value] ...

Gain and other settings specific to the RTL SDR can be set on the command line with the -gr switch. For example, the following command sets the tuner gain to +33.3 and switches the RTL AGC on:

AIS-catcher -gr tuner 33.3 rtlagc ON

Settings are not case-sensitive.

Specific Settings

Key Type Default Description
Generic Options
SAMPLE_RATE integer 1536K Sampling rate in Hz (0-20,000,000)
BANDWIDTH integer off Tuner bandwidth in Hz (0-1,000,000, 0=auto)
FREQOFFSET integer 0 Frequency correction in PPM (-150 to +150)
FORMAT string CU8 Data type for input source
Specific Options
TUNER auto/float auto Tuner gain/AGC (0-50 dB or AUTO)
RTLAGC boolean true Enable/disable RTL2832U AGC
BIASTEE boolean false Enable/disable bias tee power
BUFFER_COUNT integer 24 Number of FIFO buffers (1-100)