I managed to get gqrx on Linux to receive Narrow FM frequencies. This was annoying at first, but now I can pick up Ambulance frequencies easily. These are the settings I am using tp decode these transmissions. Ambulances and Taxis seem to transmit on these frequencies and this is very interesting to listen to. I …

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"# 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 …