PROBLEM - RTL_SDR recording multiple fm channel

[Ahmet Genc]

We are using RTL-SDR 2832U to record fm broadband. We are trying to save more than one fm channels at the same time.

We tried rtl_fm library to do that but it is impossible to run multiple rtl_fm instances at the same time. So is there anybody to help me about my issue?

Note: Also we tried rtl_fm library with multiple frequencies but it is not working properly too.

[Siegfried Jackstien]

You would need 10 rtl sticks for fm band 88 to 108 megs... 

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[Leif Asbrink]

Hello Ahmet,

You can yse Linrad to record raw data from many
rtlsdr dongles at the same time on a single computer.
You could then process the saved files and produce audio
from the desired FM stations.

Linrad also allows you to use several rtlsdr dongles and
to send raw data from each one over the network and to process
the data from the network to produce detected FM from
any number of stations within each 2,4 MHz data stream
and to save them all as .wav files on the hard disk.
The limiting factor is the FM detector of Linrad which
is rather slow.

Have a look here:
https://www.youtube.com/watch?v=7tRI9RmJu5M

Regards

Leif