Hook up a HackRF One, catch your first signals, then explore. No photos yet; reshoot pending.
USB: Plug the HackRF One into a Pi 4 USB port.
Power: Use a solid USB-C supply (3A or better).
Antenna: Attach an antenna to the HackRF’s SMA jack.
Cooling: Give the Pi airflow (small fan) for long sessions.
Space: Keep the antenna away from cables to reduce noise.
lsusb | grep -i hackrf
hackrf_info
Run these to confirm the device is seen and responding.
When the spectrum waterfall opens, it’s like a window: bright spikes, shimmering bands, hidden voices everywhere.
CC BY-NC 2025 stormrider