rdio-scanner/docs/examples/csdr

CSDR-AM

The purpose of this shell script is to record multiple AM frequencies from a single RTL-SDR and creates individual audio files per conversation.

Requirements

Tested on a Linux box.

• csdr
• sox

Configurations

Within the script itself

Change the values to your needs. Make sure the centered_freq and sampling_rate covers the freqs.

Note the syntax for freqs and filenames, they are arrays.

Each filename template use sox multiple output mode syntax for file numbering (%6n). The static part is reused by dirWatch to distinguish which talkgroup to import to.

audio_dir=./audio_files/air
device_id=00000001
center_freq=119.4e6
gain=38.6
sampling_rate=2400000
squelch=2e-4

freqs=(118.9e6 119.1e6 119.9e6)

filenames=(118900000-%6n 119100000-%6n 119900000-%6n)