High Bar (NLN) — source notes

NLN dossier · FCC records · ITU route analysis · Company connections.

Ajigaura tower position

J08 is at approximately 36.38557, 140.61314, just southeast of Arteria's landing-station compound. The tower foundation and railway/platform alignment in Ryota's annotated aerial images (English) were matched to Google Maps satellite imagery. The coordinate identifies the HBC tower outside the compound.

The June 28 visit shows the HBC nameplate, two south-southwest-facing dishes and an Arteria-labelled incoming fibre connection. The July 11 Hokota visit (English) photographs the counterparts at Hokota Minowa and Sawajiri.

SoftBank Kamogawa and MIC records

Ryota's August 16 overview (English) names and photographs SoftBank Kamogawa Radio Relay Station on the Nagara–Maruyama path. It resolves the question mark in the August 9 diagram. The facility coordinate, 35.10875, 140.01889, comes from the embedded map in a 2009 visit. This is separate from Kamogawa-no-Inu on the Mother Farm–Mihara route.

The dossier's MIC connection details use results #13 (Nagara), #8 (Kamogawa) and #10 (Minamiboso) in /data/brific/japan_mic/2026-09-17-fx-details/2010403013934-000001.json. The Minamiboso record retains the 6615/6585 MHz combination Ryota identifies as Maruyama in his station table (English).

Chikura tower coordinates

The microwave dishes at Point 120 m share the oldest lattice HF mast. The 2024 visit (English) labels it west/Johor Bahru; that label has not been crosswalked to the later north/west/south coordinate table. The map uses the transport article's locator, 34.9632131, 139.9369912, for the microwave termination. It represents equipment on one of the three HF towers.

Southern microwave sources

Chikura #1 (English) identifies HBC equipment at Mihara, with dishes toward Maruyama and Kamogawa-no-Inu. Ryota's comment on Chikura #2 (English) says the Tokyo Bay spans have no intermediate relay and use space diversity. The dossier's network section links the corrected southern route map and Tsumoriyama feeder-label photographs.