The so called “not diggable” signal can be given by anything – by both a rusty nail and a gold coin, everything depends on your machine and your experience. Below is a case in point, let’s take a look at a comparative test between two metal detectors: the DeepTech Vista Smart Plus operating at 15 kHz vs the DeepTech Vista Gold Gain working on 30 kHz. The test is being conducted in highly mineralized soil. Test target: a gold coin. Here you will find the answer to the why-does-a-detector-need-a-high-frequency question. Notice how the unit running at 15 kHz is detecting the coin. How often do you hear such signals while hunting? It’s the real classic of not diggable audio response! Continue reading
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