CASE-1270 UNRESOLVED opened 2014-12-02 · last reviewed 2024-09-17

The Periodicity

An investigation assembled from timing residuals, recovered survey data, and independent notes that share a 1,270-second interval. The correlation is the subject. The cause is not claimed.

Uncertainty is part of the file. Fictional institutional record — not a real-world claim.

Lead
Directorate III
Status
UNRESOLVED
Opened
2014-12-02
Last reviewed
2024-09-17

Known

  • A 1,270-second periodicity appears in Observation 7A residuals (SEN-81-017).
  • Recovered Signal 14 reports a period match to four significant figures (SEN-14-052).
  • Independent notes and recoveries recur on the same interval (SEN-21-070, SEN-24-096).
  • Convenient instrumental explanations tested in 1981 were excluded.

Unknown

  • Mechanism.
  • Whether the 1979 Tape Series M emission is the same phenomenon or a coincidence of numbers.
  • Why the residual does not reproduce on demand.

Open questions

  • Is Tape Series M the same phenomenon or a coincidence of numbers?
  • Why does the residual refuse routine reproduction?

Competing explanations

  1. Undiagnosed instrumental artefact common to northern emplacements.
  2. Genuine environmental / propagation structure at a stable period.
  3. Catalogue contamination — later readers projecting 1270 onto unrelated recoveries.
  4. None of the above; the correlation is real and still unexplained.

Evidence

  1. SEN-81-017
  2. SEN-86-044
  3. SEN-14-052
  4. SEN-21-070
  5. SEN-16-007
  6. SEN-24-096
  7. SEN-24-128

Counter-evidence / limits

  • No on-demand reproduction of the residual after 1981 campaigns.
  • Convenient instrumental explanations were tested and excluded — absence of those explanations is not positive proof of an external source.

Timeline

  1. 1981-09-04

    Observation 7A logged

    SEN-81-017

  2. 1986-08-29

    LOWFIELD commissioned (prior record outside station log)

    SEN-86-044

  3. 2014-11-19

    Recovered Signal 14 — period match noted

    SEN-14-052

  4. 2014-12-02

    Case opened at MERIDIAN

  5. 2016-03-22

    Experiment Delta holdover results filed

    SEN-16-007

  6. 2021-06-30

    Tape Series M recovery summary

    SEN-21-070

  7. 2024-09-17

    Convergent independent results note

    SEN-24-096

  8. 2024-10-03

    Period-1270 cross-index filed

    SEN-24-128

Disclosure history

  1. 2014-12-02 — Case opened; evidence list PUBLIC at summary level
  2. 2021-06-30 — Tape Series M recovery attached as evidence (SEN-21-070 RESTRICTED body)
  3. 2024-09-17 — Last public review; status remains UNRESOLVED
  4. 2024-10-03 — Cross-index SEN-24-128 filed OPEN
  5. [ Investigation remains open — further events possible ]

Current status / finding

You may establish that the correlation exists. You will not find, in the public catalogue, an established why. The case remains UNRESOLVED.

Institutional fiction. Uncertainty is retained on purpose — do not read a finding as a real-world claim.

CASE-1270 Working figure

Common interval

Readers assembling CASE-1270 sometimes record a single interval that recurs across the evidence.

Objective Enter the common interval in seconds.

Clues

  • SEN-81-017 logs a residual period.
  • SEN-14-052 reports a match to four significant figures.
  • Independent notes converge on the same figure.
Hint

Count seconds, not minutes.

Second hint

The figure appears with a comma in some notes: 1,270.

Accessible path (no interaction required)

The recurring interval in SEN-81-017, SEN-14-052, and related notes is 1,270 seconds.

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