In collaboration with the Ellia Foundation under the direction of Jan Rak, a series of replication tests involving the 1A21 Desmitron tube have been successfully carried out with an improved recreation of an H.G. Fischer diathermy disruptive discharge unit, capable of supplying high potential – high frequency currents to the tube for analysis. Preliminary details include the fine-tuning of the power apparatus, and both spectral and temperature gradient results, showing certain interesting behaviors of the tube during its operation. A report documenting such details is available below as a downloadable PDF.