Listening on a frequency
WaveShark and Gqrx
Gqrx is a fine radio for listening to one thing at a time. WaveShark is for finding out what is there in the first place.
Gqrx does one job well: tune a frequency, pick a demodulator, listen. It is light, stable and the first thing many people install with a dongle, and for listening to a repeater or a broadcast station it remains the shorter path.
WaveShark answers a different question. Rather than demodulating the channel you chose, it decodes everything inside the sampled span and lists what it found, so the outcome is a list of devices, aircraft, vessels, pagers and mesh nodes rather than audio from one frequency.
If you already know the frequency and want to hear it, Gqrx is enough. If the question is what is transmitting around here, it is the wrong shape of tool.
Where Gqrx is the better answer
- Simple, light and quick to learn
- Excellent for listening to one channel
- Long-standing support for a wide range of radios
Where WaveShark is
- Continuous decoding across the whole span, not one channel
- Forty-odd protocols running at once, with a packet list and a map
- Recording, transcription and a searchable message history
- A signal chain you can edit, and an agent that can drive it
Try it on a band you know.
Point it at 433.92 MHz for an hour and see what the list fills with.
Download WaveShark