VLF Systems
Very Low-Frequency (VLF) systems for airborne / UAV surveys. VLF is a passive electromagnetic method that utilizes distant, globally positioned transmitters to induce secondary responses in conductive geologic units to determine overlying conductive materials in the subsurface.
GSM-90AVU UAV VLF System
A dedicated towed-bird UAV VLF system with dual VLF sensors.
MagVLF
A towed-bird combined UAV magnetometer and VLF system available with a GSMP-35U or 25U sensor.
GSM-90AV Airborne VLF System
An airborne VLF system with dual VLF sensors. Designed for surveys with manned aircraft.