OWL Probe for measuring soil conductivity

thingiverse

This object makes building an open wire line (OWL-) probe for measuring ground parameters (conductivity and dielectric constant) very easy. But as you will also need a vector antenna analyzer (or VNA) and some knowledge, this really is a project for a certified radio amateur or HF engineer. In addition to the printed parts, you will need metal rods (brass, steel, aluminum, copper) with an outer diameter of 6 mm and cut an inner thread for M4 into these. This object is designed for mounting a BNC connector. The handle puts all these things together, electrically connected by some copper band. The distance keeper disc ensures the right distance when pushing the probe into soil and stays under the handle during measurement. And the protector, stuck at the probe ends, keeps the probe safe, when not in use. Building details as well as a description of the calculations necessary and a discussion of results can be found on my webiste: http://www.oe1cgs.at/bodenparameter-mit-owl-sonde-messen/