- multi-platform, open source SDR application
- install on linux
sudo apt install gqrx
- Shows waterfall display as well as FFT display. Easier to detect signal transmission
- Easy to record samples to disk
- launch with
gqrx --edit
# select the correct device
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- in my case im using a RTL device so i select that one
- ensure you tune to the right frequency (remember its in kHZ not MHZ)
- select WFM (stereo)
- Can see the red in the waterfall display meaning there is a strong signal present
- can bookmark frequency for easy return finding in the future
- you might notice two bands around strong radio signals as seen below
.png)
- i believe this is to define the stations, however i am unsure. seems to make sense