RTL SDR on Linux with a RTL2838 DVB-T dongle.

Posted: October 22, 2017. At: 1:20 PM. This was 1 month ago. Post ID: 11471
Page permalink: http://securitronlinux.com/debian-testing/rtl-sdr-on-linux-with-a-rtl2838-dvb-t-dongle/

Using a RTL2838 DVB-T dongle to listen to radio transmissions is very easy on Linux.

I created this file under /etc/udev/rules.d/.

rtl-sdr.rules.

# Realtek Semiconductor Corp. RTL2838 DVB-T 
SUBSYSTEMS=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="2838", MODE:="0666", GROUP="adm", SYMLINK+="rtl_sdr"

Then I replugged my USB DVB dongle, and I could test it out.

This command allowed me to hear an FM radio station.

rtl_fm -M wbfm -f 102.1M | play -r 32k -t raw -e s -b 16 -c 1 -V1 -

Gqrx is the best SDR application for listening to a wide variety of radio frequencies. Install it on Ubuntu 17.04, then load it up to test your radio dongle.

http://gqrx.dk/download/install-ubuntu.

These are my settings for my dongle for SDR.

Gqrx RTL232 SDR settings.
Gqrx RTL232 SDR settings.

Listening to the ABC radio to check on the cricket.

Listening to the ABC with gqrx SDR application.
Listening to the ABC with gqrx SDR application.

Adjust the gain if the signal is faint, this is a very good application, you can listen to frequencies out side the FM radio band, but you would need a guide for your area as to what radio frequencies are used by emergency services and/or aircraft.

There are websites that list common frequencies around your area, checking these would give the user a starting point to find interesting listening.

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