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Very Low-Frequency (VLF) systems for airborne / UAV surveys. The VLF survey technique is a passive electromagnetic method that utilizes distant, globally positioned transmitters to induce secondary responses in conductive geologic units.
UAV VLF-EM system with dual 3-coil sensors. Designed for drone surveys.
Airborne VLF-EM system with dual 3-coil sensors. Designed for surveys with manned aircraft.