MIC 6 / 6.5 / 7.5 GHz: selected English translations

Selected source sections and channel diagrams, not full-document translations. Frequencies and bandwidths below are in MHz. Low/high means the two frequency groups used for opposite directions of a duplex link.

MIC fixed-station frequency tables, 2016

Original: 電波法関係審査基準（平成13年総務省訓令第67号）の一部を改正する訓令案新旧対照表. English: Comparison table for a draft instruction amending the Radio Act examination criteria (MIC Instruction No. 67 of 2001). 2016 consultation text. MIC Japanese PDF. The left column is the proposed text; the right column is the preceding text. The channel centres below agree between both columns where both are present. Printed and PDF page numbers coincide in this document.

6 GHz: Appendix (7)-9, section 5

“Frequency arrangement, combinations and order of use,” pp. 49–52. 低群 / 高群: low group / high group. 占有周波数帯幅: occupied bandwidth. The 18.5 MHz arrangements for 16/256QAM and 64QAM have the same centres; the source separately gives their polarization/channel-priority arrangements. The small-capacity channel occupies the 6165–6185 MHz slot (p. 40).

6.5 / 7.5 GHz: Appendix (4)-12

“Frequency arrangement,” pp. 125–129. These are fixed stations excluding broadcasting-service fixed stations (application section, p. 90). The communication method is one-to-one, digitally modulated duplex with symmetric transmit/receive operation (p. 91). The 36.5 MHz format is limited to telecommunications-service fixed stations (p. 91). Unlike the older 2007 illustration, this table explicitly includes 7460 and 7470 MHz at 9.5 MHz BW and 7465 MHz at 19 MHz BW.

In the 6.5 GHz table, channel numbers are 12–14 (5 MHz), 31–42 (9.5 MHz), 1/3/5/7/9/11 (19 MHz), 61–64 (28.5 MHz), and 51 (36.5 MHz). In the 7.5 GHz table they are 14–21 (2.5 MHz), 7–10 (5 MHz), 31–42 (9.5 MHz), 1–6 (19 MHz), 61–64 (28.5 MHz), and 51 (36.5 MHz).

Appendix (22)-12, pp. 81–84, separately reproduces the same 6.5/7.5 GHz pairs for public-service portable systems, except that it has no 36.5 MHz entries.

5.8 / 6.4 / 6.9 GHz: Appendix (6)-1

Section (6), pp. 1–2, applies to telecommunications-service fixed stations in B band (>5850–5925 MHz), C band (>6425–6570 MHz), and D band (>6870–7125 MHz). The permitted occupied bandwidth is 28.5 MHz or less; the standard modulation is 128QAM, with OFDM corresponding to the same permitted occupied bandwidth. Appendix (6)-1, p. 7, “Frequency arrangement,” gives exactly these two pairs:

These are explicit cross-band low/high pairs; the source does not give a uniform per-band duplex offset or a longer centre-frequency series.

MIC M/N-band channel diagrams, 2007

Original: 情報通信審議会 情報通信技術分科会 放送システム委員会報告(案) ― 放送事業用システムの技術的条件 ―, 資料2-2, August 2007. English: Information and Communications Council, Information and Communications Technology Subcommittee, Broadcasting Systems Committee draft report: technical conditions for broadcasting-service systems. MIC Japanese PDF.

Section 1.3.1 defines 既存業務用 (existing services) here as public-service, general-service and telecommunications-service links. These use duplex operation with low and high frequency groups and a guard band between the groups. Different channel widths have their own frequency arrangements. The figures show these existing-service arrangements separately from the broadcasting arrangements.

Annex 4: M band (6.5 GHz) frequency arrangement

Printed p. 2-45; PDF page 59. Translation of the existing-service rows. The legend calls the widths frequency spacing (間隔).

Every corresponding low/high centre in these rows differs by 160 MHz.

Annex 5: N band (7.5 GHz) frequency arrangement

Printed p. 2-46; PDF page 60. Translation of the existing-service rows.

Every corresponding low/high centre in these rows differs by 160 MHz. The figure also shows 2.5 MHz channels 14–21 without individually printing their centres; the 2016 fixed-station table above supplies them. The original labels existing-service channel 36 as 7590; the table uses 7490, which is printed in the corresponding broadcasting row and follows the drawn position and 7650 MHz high-group centre.

MIC 6 / 6.5 / 7.5 GHz technical report, June 2025

Original: 陸上無線通信委員会報告「6/6.5/7.5GHz帯固定通信システムの高度化に係る技術的条件」. English: Land Radio Communications Committee report: technical conditions for upgrading fixed communications systems in the 6 / 6.5 / 7.5 GHz bands. MIC Japanese PDF, MIC publication page, 17 July 2025.

Tables 2-1 and 2-2: transmission formats after revision

Printed p. 28; PDF page 30. 占有周波数帯幅の許容値 means permitted occupied bandwidth. It is distinct from the channel spacing in the 2007 diagrams. Rows with the same bandwidth are combined below; the modulation lists retain the table's contents.

Table 2-2 notes: OFDM is to correspond to one of the modulation-format entries; the 36.5 MHz entries are limited to telecommunications-service fixed stations.

Section 3.1.2(2)(c), printed p. 47 / PDF page 49, explicitly associates a 40 MHz channel bandwidth with a 36.5 MHz occupied-bandwidth limit, and a 30 MHz channel bandwidth with a 28.5 MHz occupied-bandwidth limit. This report does not provide the centre-frequency lists for these channel widths.

ARIB coordination form instructions: terminology and 6 GHz reference centres

Original: 照会相談業務申込書添付資料記入要領. English: Instructions for completing the attachments to a coordination inquiry application — telecommunications services. August 2023; inspected 17 September 2026. ARIB Japanese PDF.

Printed p. 5, section 4: the system name consists of frequency band – modulation format – transmission capacity. Thus the 6M, 52M, 156M, etc. suffixes are transmission-capacity labels, not MHz channel widths.

Printed p. 16, Annex Table 1: Representative low-group station frequency by frequency band and frequency arrangement. Selected 6 GHz entries:

These are representative frequencies. The complete 6 GHz channel-centre lists and their high-group partners are translated from MIC above.