Priezor
Passive magnetic antenna / VLF · XLR balanced
Open-source passive magnetic antenna for electromagnetic listening, capable of capturing faint atmospheric events in VLF radio bands. Approximately 30 dB (31.6× more sensitive) than common pickup coils. Less directional and more focused on broad atmospheric reception compared to standard Elektrosluch sensors.
In the box: 1× Priezor antenna with XLR cable
- Passive magnetic antenna (no power required)
- Approximately 30 dB more sensitive than common pickup coils
- VLF radio band reception
- Captures atmospheric events (sferics, whistlers)
- 333-turn coil design
- Open-source design
- Professional XLR-3M output
| Parameter | Value |
|---|---|
| Type | Passive magnetic antenna |
| Power Required | None |
| Frequency Response | 20 Hz – 90+ kHz |
| Coil Turns | 333 |
| Loop Resistance | ~300 Ω |
| Output | XLR-3M |
| Sensitivity | ~30 dB more than common pickup coils |
| Operating Temperature | -10 to +55°C |
| Storage Temperature | -25 to +70°C |
- Make sure that phantom power on your input device is off
- Plug Priezor into the microphone input of your recorder or mixer
- Adjust the gain accordingly and listen
Tip
For recording VLF ("natural radio") sounds, Priezor performs best when paired with a low-noise microphone preamplifier with at least 70 dB of gain (for example Sound Devices MixPre-3).

Manual PDF download coming soon