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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
  1. Make sure that phantom power on your input device is off
  2. Plug Priezor into the microphone input of your recorder or mixer
  3. 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).

Geofón / Priezor adapter
Allows minijack connection to XLR sensor output

Manual PDF download coming soon