Abstract
ABSTRACT A modern low cost microcomputer and accessories were used to create a very low frequency (VLF) receiver for geophysical prospecting. The signals were detected by induction coils, which were then amplified, digitized by a sound card, and analyzed by a Raspberry Pi computer. The computer used a Linux operating system and the Python programming language. The peripheral devices were “off-the-shelf”' commercial items except for the preamplifiers and the induction coils, which were designed and constructed by the authors. A test profile showed typical VLF anomalies across a weak conductor.
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