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Recording the extremely low frequency pulsations of wireless communication electromagnetic fields
Dimitris J Panagopoulos1,2, Roman Litovsky3, Kent Chamberlin4
1Choremeion Research Laboratory, 1st Department of Paediatrics, Medical School, National Kapodistrian University of Athens, Athens, Greece.
Electromagnetic Biology and Medicine
|April 20, 2026
Summary
Digital wireless communication signals emit pulsed Extremely Low Frequency (ELF) radiation, not just continuous Radio Frequency (RF) waves. These ELF pulsations, not the RF carrier, likely cause non-thermal biological effects from devices like Wi-Fi and 5G phones.
Area of Science:
- Electromagnetism and Biophysics
- Wireless Communication Technologies
- Environmental Health Science
Background:
- Digital wireless communication (WC) signals, including mobile phones, Wi-Fi, and Bluetooth, are often characterized solely as Radio Frequency (RF)/Microwave (MW) signals.
- However, these signals are emitted discontinuously as on/off pulses at various Extremely Low Frequency (ELF) rates.
- The ELF pulsation component of WC emissions is frequently overlooked in scientific assessments.
Purpose of the Study:
- To record and analyze the ELF pulsation characteristics of common WC devices.
- To investigate the role of ELF pulsations in the non-thermal biological effects of WC electromagnetic fields (EMF).
- To differentiate the biological impact of pulsed ELF emissions from continuous RF carrier waves.
Main Methods:
- Utilized a broadband antenna connected to a calibrated RF spectrum analyzer (SA).
- Recorded the power of emitted RF/MW signals over time using various sweep times (10 ms to 2 s).
- Captured and analyzed the ELF pulsing emissions from Wi-Fi routers and 4G/5G mobile phones.
Main Results:
- Direct recordings clearly demonstrate the ELF pulsing emissions from common WC devices.
- Significant variability in pulse amplitude, shape, duration, and repetition frequency was observed.
- The study confirms that WC EMF signals are characterized by ELF pulsations, not just continuous RF waves.
Conclusions:
- The non-thermal biological and health effects of WC EMFs are likely induced by ELF pulsations, modulation, and variability.
- Standalone, non-modulated RF carrier waves primarily cause heating effects.
- The Ion Forced Oscillation and Voltage-Gated Ion Channel (IFO-VGIC) mechanism provides a framework for understanding these ELF-induced bioeffects.
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