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K. L. Corum and J. F. Corum papers (NASA Radio JOVE; Tesla Memorial Society of New York), 2026-10-08

Found by Google (Chrome) query: Corum "Nikola Tesla and the Planetary Radio Signals" OR "Tesla Coil as a Slow Wave" OR "Colorado Springs" Corum pdf. Investigator (STEP I).

Files saved

  • research/files/corum-2003-tesla-planetary-radio-signals.pdf, from https://radiojove.gsfc.nasa.gov/education/educationalcd/Books/Tesla.pdf (hosted on NASA Goddard's Radio JOVE education CD pages; "adapted from the 5th International Tesla Conference, 'Tesla. III Millennium', October 15-19, 1996, Belgrade"; stated to summarise an 81-page 1996 engineering report).
  • research/files/corum-tesla-colorado-springs-receivers.pdf, from http://teslasociety.com/teslarec.pdf ("Tesla's Colorado Springs Receivers (A Short Introduction)", © 2003 K. L. Corum and J. F. Corum, 9 pp.).

What they say (priority 2: independent technical work on Tesla's points)

  • Receivers: about 15 years before 2003 the Corums reconstructed Tesla's 1899 receivers from his patent applications, correspondence and the Colorado Springs Notes. They describe four coherer modes and call Tesla's mode one "in which locally generated RF injection exploits the voltage-controlled operating-point resistance of the coherer", with "a controlled, frequency-selective, incremental negative resistance" that gave "remarkable gain"; they state the receivers "were more than adequate" to detect RF from natural sources [web: teslarec.pdf §1 and §4]. They also say a large part of the 1899 work was detecting and monitoring VLF radio waves from storms and trace that branch of radio science to Tesla.
  • Bears on claim 1: the 3 July 1899 observation depended on these receivers; a reconstruction with measured behaviour is the kind of test the reviewers can weigh. Audio clips are mentioned (not retrieved).
  • Planetary signals: the paper grants that what Tesla heard could be natural VLF phenomena, then explores a planetary origin; it discusses Jupiter's decametric and kilometric radiation and Io-modulated events, and an "interesting coincidence" between predicted Jovian events and Mars setting on the night of 21 July 1899 (§8.1, "The Io Events of July 22, 1899") [web: Tesla.pdf §2, §7, §8].
  • Bears on claim 7 (priority claims made for Tesla, here radio astronomy) and on the 1899 signal reports. The Corums are Tesla-coil researchers who also hold the CPG wireless-power interest noted in research/2026-10-08-viziv-cpg.md (J. F. Corum named as Viziv's chief scientist in some sources [memory, medium]; not verified this run), so for claim 1 they have a stake.