HF findings, 2026-09-11

These findings describe the 169-extract collection examined on 2026-09-11, issues 2911–3079. The original screening tools and reports were removed on 2026-09-16; this is a research note. Current query instructions are in the README.

Review scope

Keep anything touching the US, Canada or Europe, plus Tokyo/Chiba, Singapore/Johor/Batam and Mumbai. Chicago, London, NYC, Seattle, Alaska, Midgic/New Brunswick and Ontario are priority areas. Missing or area-only geography stays unresolved. These are research interests, without automatic radius or bounding-box rules.

The user excluded links touching the exact endpoint label TUNIS, case-insensitively. This is not a blanket Tunisia exclusion. Moscow/Moskva/Moscou links otherwise remain in scope.

The original screen started with Part I ADD/MODIFY notifications and used other publication parts for outcomes and history. The 18,921 Part IIB recorded events should not be presented as new registrations. Source evidence for that publication category: ITU terrestrial BR IFIC training.

Specific leads

Coordinates below are declared source values; their apparent precision does not establish that a point is an actual installation. The current hf_endpoints view retains the source decimal coordinates without deliberate rounding.

  • Chiba has seven distinct transmitter coordinates. Treating its site label as a single station merges separate sites. One at 35.2633333333333, 139.865555555556 has Batam and Hong Kong receivers; April 2026 modifications add Seattle at 47.8791666666667, -122.287222222222. These are 84 modification notices covering 12 frequencies and seven emission classes, not 84 physical links.
  • Essex County, Ontario, TX 42.0419444444444, -82.9741666666667, has 24 kHz records with receivers in England, Japan, the Seattle area and Brazil. Its Japan receiver at 34.9630555555556, 139.936944444444 matches one of the Chiba transmitter locations to source-coordinate precision.
  • Midgic NB, TX 45.9919444444444, -64.3066666666667, has 15 frequencies at 24 kHz. The receiver labelled CORNWALL UK is declared at 51.4352777777778, -0.885833333333333, in the broad London screening area.
  • Hanau, TX 50.1336111111111, 8.94277777777778, has July 2026 notifications to Mumbai at 19.3047222222222, 72.7913888888889: 11 frequencies, 10 kHz bandwidth. August publication contains ten Part II outcomes and one Part III outcome.
  • Bitritto, TX 41.06, 16.83, has February 2026 notifications to Naiks Plot, India, at 18.6563888888889, 72.8661111111111: eight frequencies, 24 kHz bandwidth, callsign I7H22.
  • Karben has MULTIPOINT receiver geography including NYC, Tokyo and, in its 2026 set, Mumbai. Some points look like city reference coordinates; do not identify them as installations without independent evidence.
  • MANHATTAN is the town in Illinois in this record: the Chiba receiver coordinate, 41.3338888888889, -87.9577777777778, points to Manhattan, Illinois—not Manhattan in New York City.

Further screening considerations

The unresolved notification bucket includes large groups such as 596 Indonesian FB entries at 2.8 kHz. Station class, bandwidth, declared service geography and repeated network patterns can guide the next exclusions, but no blanket rule currently rejects a service class, narrow bandwidth or unknown operator. Source rows remain queryable regardless of geography.

Use hf_records and hf_endpoints for further inspection; the endpoint query supplies their join. Original antenna, callsign and agency fields remain in the combined source views.