_ /\/| _ _ _________________
| | |/\/ | | | / ___| _ \ ___ \
_ __ ___| |_ _ __ ___ __ _ _ __ __ _ _ __ ___ _ __| |_| \ `--.| | | | |_/ /
| '__/ _ \ __| '__/ _ \ / _` | '__/ _` | '_ ` _ \ | '__| __| |`--. \ | | | /
| | | __/ |_| | | (_) | (_| | | | (_| | | | | | | | | | |_| /\__/ / |/ /| |\ \
|_| \___|\__|_| \___/ \__, |_| \__,_|_| |_| |_| |_| \__|_\____/|___/ \_| \_|
__/ |
|___/
Wideband Spectrum analyzer on your terminal/ssh console with ASCII art. Hacked from Ettus UHD RX ASCII Art DFT code for RTLSDR. Adapted from retrogram~plutosdr.
[Tuning on VHF band while transmitting on 145.500 MHz with Handheld Radio]
[Spotting FCCH (Freq. Correction) burst in the local GSM BCCH (Broadcast Control Channel) @ 938.2 MHz]
Pan & Zoom spectrum using keyboard controls [decrement-Increment]. [Full feature demo]
- Center Frequency using keys [f-F]
- Sampling rate using keys [r-R]
- Gain using keys [g-G]
- Reference level using keys [l-L]
- Dynamic Range using keys [d-D]
- Frame rate using keys [s-S]
- Tuning step using keys [t-T]
- Hide/Show Controls using keys [c-C]
- Quit program using keys [q-Q]
Tuning step applies for decrementing / Incrementing Center Frequency and Sampling Rate.
retrogram~rtlsdr - ASCII Art Spectrum Analysis for RTLSDR
Allowed options:
--help help message
--dev arg (=0) rtl-sdr device index
--rate arg (=1000000) rate of incoming samples (sps) [r-R]
--freq arg (=100000000) RF center frequency in Hz [f-F]
--gain arg (=0) gain for the RF chain [g-G]
--frame-rate arg (=15) frame rate of the display (fps) [s-S]
--ref-lvl arg (=0) reference level for the display (dB) [l-L]
--dyn-rng arg (=80) dynamic range for the display (dB) [d-D]
--step arg (=100000) tuning step for rate/bw/freq [t-T]
--show-controls arg (=1) show the keyboard controls
sudo apt install librtlsdr-dev libncurses5-dev libboost-program-options-dev
For running on a Linux host with RTLSDR
make
./retrogram-rtlsdr --rate 1.8e6 --freq 100e6 --step 1e5
- Generic support for osmosdr / soapysdr devices
- Direct Freq Entry / parameter change
- Mouse tuning
- Modularize / Optimize with std::vector transform
- Waterfall (!) / Markers / Demodulators (!!) :)
- HTML output / Web(sockets)-server