White's TDI Pulse Induction

The TDI was White's pulse induction line, designed by Eric Foster, and it did something no VLF could: ignore ground mineralization almost entirely and keep hearing small gold and deep targets in dirt that shuts other machines down. The BeachHunter Extreme took the same engine underwater for salt beach and surf work, where PI is the honest answer rather than the exotic one. Coils are mono and model specific, which is why Coiltek and Miner John options for the TDI matter. Machines, coils and parts are collected here.