Rtlizer is a simple spectrum analyzer application written using rtlsdr, kiss_fft and Gtk+. It was originally created as a Beaglebone + rtlsdr demo, but it will probably run on anything with rtlsdr and Gtk+ installed, including a Raspberry Pi equipped with an Adafruit piTFT display.
You can see a short video demo on YouTube: https://www.youtube.com/watch?v=jzmFXreuFR4
The source code is located in the src/ subdirectory. You can imply type "make" in this directory and the program should build on any platform where the dependencies are met. The build process will generate a single executable called rtlizer and you can copy this to a location of your choice.
Instructions for setting rtlizer up on specific targets are available for:
- Beaglebone running Debian 7 console image
You can basically run rtlizer as is in any X11 environment. The default window size is set to 320x240 but can be overridden using X Window System geometry string, e.g.
There are also other command line options are available, see rtlizer -h.
You can use the following keys while rtlizer is running:
LEFT Increase frequency RIGHT Decrease frequency UP Increase sample rate DOWN Decrease sample rate ENTER Exit
Rtlizer was written by Alexandru Csete. Uses code from rtl_test by Steve Markgraf. Includes kiss_fft by Mark Borgerding.