2026-10-08 aconkyou.web.fc2.com (Japanese blog "現代科学へのいちゃもん 239")
URL: https://aconkyou.web.fc2.com/nanamas/nana25a239.html (fetched by curl, Shift-JIS converted; saved research/pages/fc2-nana25a239.html).
Found (translated summary)
The blogger, surveying scalar-wave literature and Whittaker's papers, writes that he "recently found a 2011 website paper and a PowerPoint pdf" ("longitudinal dielectric waves in a tesla coil and quaternionic maxwell's equations"; "teslasociety.ch"), whose content is "an experimental paper that detected scalar waves with a Tesla coil". He gives Handwerker's self-description in English, explains the Tesla societies, quotes the Arbab-Satti passage and reproduces the Sigma equations as (46)-(52), and asks whether Heaviside's vector form lost something important from Maxwell's quaternions.
Bearing
A later account (priority 3), sympathetic; it adds no data. It confirms the paper circulated with a Tesla Society Switzerland connection by about 2011-2012.