NuVo / GT Technologies / Ermis: FX network reconstruction
Reconstructed on 2026-09-17 from the existing DA=1, OW=FX pull. The pasted
sidechat records JOSADA's mapping only; the pairings below are a new check of
these three operators' records, not an account of an earlier agreed map.
Source directory: /data/brific/japan_mic/2026-09-17-fx-details/. MIC's update
date is 2026-09-16. Each operator's raw file is
<corporate-number>-000001.json; fx-details.csv and rf-lines.csv retain
the corresponding records and RF lines.
Keep the municipality name and #record in working maps. Here #record
is listInfo.no / result position within that operator's saved response,
not a durable licence ID. Despite its name, tdfkCd in these responses
contains Japanese municipality text, not a municipality code. Callsigns,
licence numbers and communication counterparts are masked. Municipality
points therefore do not locate towers; same-municipality pairs are omitted
from a municipality-level map but retained below.
Channel pairs used
The bandplan tables give these exact pairs. Endpoint powers support a pairing where they match, but equal power is not a requirement.
| Operator | Emission | Low ↔ high TX frequency, MHz | Duplex offset, MHz |
|---|---|---|---|
| NuVo | 36M5D7W |
6670 ↔ 6830; 7535 ↔ 7695 | 160 |
| NuVo | 53M5D7W |
14430 ↔ 14900 | 470 |
| GT | 28M5D7W |
6675 ↔ 6835; 7450 ↔ 7610 | 160 |
| Ermis | 28M5D7W |
7480 ↔ 7640 | 160 |
MIC source tables: 6.5/7.5 GHz, PDF pp. 126–129 and 15 GHz, PDF pp. 46–47.
NuVo Networks — 5010401121190
Five records, seven RF lines:
| Record | Municipality | TX frequency and power |
|---|---|---|
| #1 | Futtsu / 千葉県富津市 | 6670 MHz, 40 mW; 7695 MHz, 200 mW |
| #2 | Minamiboso / 千葉県南房総市 | 6670 MHz, 40 mW |
| #3 | Minamiboso / 千葉県南房総市 | 6830 MHz, 40 mW |
| #4 | Kōtō / 東京都江東区 | 14430 MHz, 320 μW; 7535 MHz, 130 mW |
| #5 | Kōtō / 東京都江東区 | 14900 MHz, 320 μW |
- Kōtō #4 ↔ Futtsu #1: unique 7535/7695 counterpart records in this sample, with 130/200 mW. This is the cross-municipality edge supported directly by the frequency pairing.
- Kōtō #4 ↔ #5: unique 14430/14900 pair, both 320 μW (0.32 mW). Retain as a same-municipality link, omit from the municipality map.
- 6670/6830 remains ambiguous: Futtsu #1 and Minamiboso #2 both match Minamiboso #3 by frequency, emission and 40 mW power. There are two low occurrences and one high occurrence. Treating each RF line as one endpoint permits either #1 ↔ #3 or #2 ↔ #3, leaving the other low occurrence unmatched; it does not establish both links.
Existing Ryota research reports Shin-Toyosu Cube → Kyowa Bussan Ariake Center → Mother Farm West → Cosmo CC West → SoftBank Maruyama. This supports investigating Futtsu ↔ Minamiboso followed by a local Minamiboso segment, but the three 6.5 GHz lines alone do not resolve that chain. Do not duplicate #3's RF line or assign exact sites merely to complete it.
GT Technologies Japan — 1011003006362
Four records, six RF lines:
| Record | Municipality | TX frequency and power |
|---|---|---|
| #1 | Futtsu / 千葉県富津市 | 7450 MHz, 6 mW; 6835 MHz, 45 mW |
| #2 | Minamiboso / 千葉県南房総市 | 7450 MHz, 1.4 mW |
| #3 | Minamiboso / 千葉県南房総市 | 7610 MHz, 6 mW, twice |
| #4 | Kōtō / 東京都江東区 | 6675 MHz, 45 mW |
| Working pair | Low / high frequency, MHz | Low / high power | Map treatment |
|---|---|---|---|
| Kōtō #4 ↔ Futtsu #1 | 6675 / 6835 | 45 / 45 mW | Cross-municipality |
| Futtsu #1 ↔ Minamiboso #3 | 7450 / 7610 | 6 / 6 mW | Cross-municipality |
| Minamiboso #2 ↔ #3 | 7450 / 7610 | 1.4 / 6 mW | Same municipality; omit |
The working chain is Kōtō → Futtsu → Minamiboso, with a further local Minamiboso segment. This accounts for all six RF occurrences if #3's two identical entries represent two endpoints. Swapping those identical occurrences makes no difference to the record pairs. The local segment requires no assumption of equal TX power.
The existing Optiver dossier reports the route through No. 5 Inoue Building, Mother Farm East and Cosmo West; Ryota's fuller route continues to SoftBank Maruyama. Those are separate site-level evidence. The FX records support the municipality chain, but do not themselves assign the two Minamiboso records to particular named sites. The urban E-band segment is outside this FX-only pull.
Ermis — 8010403016122
Two records, two RF lines, both 28M5D7W:
| Low TX record | High TX record | Frequencies, MHz | Power |
|---|---|---|---|
| Sodegaura #1 / 千葉県袖ケ浦市 | Kōtō #2 / 東京都江東区 | 7480 ↔ 7640 | 90 mW each |
This gives one unique candidate Sodegaura ↔ Kōtō span within the sample, with no remaining RF lines. It agrees at municipality level with the existing Ermis dossier and Ryota's inferred Shimoizumi ↔ Shin-Toyosu route. The masked MIC counterparts do not independently identify those exact towers. Ermis's Maeda receive site has no endpoint in these two FX records.
Municipality-map contents from this reconstruction
Four cross-municipality edges are ready to render: NuVo Kōtō–Futtsu; GT Kōtō–Futtsu and Futtsu–Minamiboso; Ermis Sodegaura–Kōtō. NuVo's 6.5 GHz continuation remains a separately labelled candidate. Same-municipality links are recorded above rather than drawn as loops. No new map was produced as part of this documentation pass.