#SpectrumRecording

2024-12-12

The PiZero 2W spectrum recorder runs for 7 hours on two 18650s & a step-down 5V converter (which doesn’t seem to add measurable noise on HF). And of course the batteries are hot-swappable as the unit has its own small UPS battery. The only limitation is the amount of free space on the MicroSD card 📡#PortableSDR #SDR #HF #Shortwave #SpectrumCapture #SpectrumRecording #AirSpy

This image shows my portable spectrum capture recorder based on a Pi Zero 2W that I have mentioned in my previous posts. It is connected to an AirSpy HF+ Discovery, which is in turn connected to a 2x6m dipole mounted over a big tree. It is externally powered by two 18650 LiIon batteries and a 5V step down converter.
2024-12-03

1/4 Final version of the UI (for now). Battery indicator, remaining recording time available & the duration of the current recording (in hh:mm). The Pi boots into this UI and triggers airspyhf_rx to record with the selected parameters if a HF+ is connected. The screen has minimal 🔋 impact when sleeping.

#SDR #HF #Shortwave #SpectrumRecording #PortableSDR #Mediumwave

This image shows a Raspberry Pi Zero 2W with a LiPo battery powered UPS bottom HAT and a TFT screen + joystick + two button HAT attached on top. The screen is showing the UI described in the post.

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