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  **World Radiocommunication Conference (WRC-07)\  ![](media/image1.png){width="1.9270833333333333in"
  Geneva, 22 October - 16 November 2007**          height="0.8125in"}

                                                   

                                                   

  **PLENARY MEETING**                              **Addendum 13 to Document 41-E**

                                                   **22 August 2007**

                                                   **Original: English**

  Asia-Pacific Telecommunity Administrations       

  common proposals for the work of the conference  

  Agenda item 1.13                                 
  ------------------------------------------------ ----------------------------------------------------

1.13 taking into account Resolutions **729 (WRC‑97)**, **351**
**(WRC‑03)** and **544** **(WRC‑03)**, to review the allocations to all
services in the HF bands between 4 MHz and 10 MHz, excluding those
allocations to services in the frequency range 7 000-7 200 kHz and those
bands whose allotment plans are in Appendices **25**, **26** and **27**
and whose channelling arrangements are in Appendix **17**, taking
account of the impact of new modulation techniques, adaptive control
techniques and the spectrum requirements for HF broadcasting

Introduction

This is a very broad agenda item, as there are multiple services
allocated to the HF bands between 4 MHz and 10 MHz, including
aeronautical mobile (OR), aeronautical mobile (R), amateur,
broadcasting, fixed, maritime mobile and mobile services. Agenda item
1.13 covers three Resolutions that deal with five separate issues.

Resolution 729 (WRC-97): This Resolution calls for a review of frequency
adaptive techniques for fixed and mobile services in the MF and HF
bands. The first part addresses the need to automatically limit
simultaneous use of frequencies to the minimum necessary. The second
part addresses the need to evaluate the channel occupancy prior to and
during operation, with a view to avoiding unintentional harmful
interference.

Resolution 351 (WRC-03): This Resolution calls for a review of the
frequency and channel arrangements for the maritime mobile service in
the MF and HF bands. Particularly, this review addresses RR Appendix 17
with a view to improving efficiency by considering the use of new
digital technology by the maritime mobile service.

Resolution 544 (WRC-03): This Resolution addresses the identification of
additional spectrum for the broadcasting service in the HF bands. It
specifically notes a spectrum deficiency of at least 250 kHz, up to 800
kHz, for the broadcasting service in bands below 10 MHz.

Review of allocations: The task is to review the allocations to all
services in the frequency range 4‑10 MHz, except those that are
excluded, with a view to address those issues outside of Resolutions 729
(WRC-97), 351 (WRC-03) and 544 (WRC-03) and those elements where the
Resolutions are interrelated. There is a difference of opinion on the
scope of this issue.

# Resolution 729

APT supports no change to the Table of Frequency Allocations to satisfy
Resolution 729 (WRC-97) and Resolution 729 (WRC-97) should be updated in
accordance with completion of studies.

**MOD** ASP/41A13/114

RESOLUTION 729 (Rev.WRC-07)

Use of frequency adaptive systems in the MF and HF bands

The World Radiocommunication Conference (Geneva, 2007),

considering

\...

*d)* that the Radiocommunication Bureau no longer undertakes examination
with respect to the probability of harmful interference caused by new
assignments recorded in the Master International Frequency Register
(MIFR) in the non-planned bands below 28 MHz;

\...

**Reasons:** Further studies are not necessary.

# Resolution 351

APT supports modification of Appendix 17 to provide frequency bands for
data transmission of maritime mobile service and the continued use of
Morse telegraphy should be allowed.

APPENDIX 17 (Rev.WRC-03)

Frequencies and channelling arrangements in the\
high-frequency bands for the maritime mobile service

(See Article **52**)

**MOD** ASP/41A13/115

PART A  --  Table of subdivided bands     (WRC-07)

Table of frequencies (kHz) to be used in the band between 4 000 kHz and
27 500 kHz\
allocated exclusively to the maritime mobile service

Table of frequencies (kHz) to be used in the band between 4 000 kHz and
27 500 kHz\
allocated exclusively to the maritime mobile service (*continued*)

+--------------------------------+---+------------+---+--------------+---+--------+
| Band (MHz)                     | 4 |            | 6 |              | > |        |
|                                |   |            |   |              |   |        |
|                                |   |            |   |              | \ |        |
|                                |   |            |   |              | . |        |
|                                |   |            |   |              | . |        |
|                                |   |            |   |              | . |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Limits (kHz)                 |   | 4 146      |   | 6 224        |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Frequencies assignable       |   | **         |   | **6 225.4**\ |   |        |
| > to ship stations and coast   |   | 4 147.4**\ |   | to\          |   |        |
| > stations for telephony,      |   | to\        |   | **6 231.4**\ |   |        |
| > simplex operation\           |   | **         |   | \            |   |        |
| > *a)* *p)*                    |   | 4 150.4**\ |   | *3 f.\       |   |        |
|                                |   | \          |   | 3 kHz*       |   |        |
|                                |   | *2 f.\     |   |              |   |        |
|                                |   | 3 kHz*     |   |              |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Limits (kHz)                 |   | 4 152      |   | 6 233        |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Frequencies assignable       |   | **4 154**\ |   | **6 235**\   |   |        |
| > to ship stations for         |   | to\        |   | to\          |   |        |
| > wide‑band telegraphy,        |   | **4 170**\ |   | **6 259**\   |   |        |
| > facsimile and special        |   | \          |   | \            |   |        |
| > transmission systems\        |   | *5 f.\     |   | *7 f.\       |   |        |
| > *p)*                         |   | 4 kHz*     |   | 4 kHz*       |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Limits (kHz)                 |   | 4 172      |   | 6 261        |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Frequencies assignable       |   |            |   | **6 261.3**\ |   |        |
| > to ship stations for         |   |            |   | to\          |   |        |
| > oceanographic data           |   |            |   | **6          |   |        |
| > transmission *c)* *p)*       |   |            |   | 262.5**[^1]\ |   |        |
|                                |   |            |   | \            |   |        |
|                                |   |            |   | *5           |   |        |
|                                |   |            |   | f.***\****\  |   |        |
|                                |   |            |   | 0.3 kHz*     |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Limits (kHz)                 |   | 4 172      |   | 6 262**\***  |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+
| > Frequencies assignable to    |   | **4 174**  |   | **6 264\     |   |        |
| > ship stations for wideband   |   | **\        |   | \            |   |        |
| > telegraphy, facsimile and    |   | **\        |   | \            |   |        |
| > special transmission systems |   | \          |   | **\          |   |        |
| > *p)*                         |   | \          |   | *1 f.\       |   |        |
|                                |   | *1 f.\     |   | 4 kHz*       |   |        |
|                                |   | 4 kHz*     |   |              |   |        |
+--------------------------------+---+------------+---+--------------+---+--------+

Table of frequencies (kHz) to be used in the band between 4 000 kHz and
27 500 kHz\
allocated exclusively to the maritime mobile service (*continued*)

+--------------------------------+------------+--------------+--------+
| > **Band (MHz)**               | **4**      | **6**        | *      |
|                                |            |              | *\...\ |
|                                |            |              | **     |
+--------------------------------+------------+--------------+--------+
| > Limits (kHz)                 | 4 176      | 6 266        |        |
+--------------------------------+------------+--------------+--------+
| > Frequencies (paired)         | **         | **6 266.5**\ |        |
| > assignable to ship stations  | 4 176.5**\ | to\          |        |
| > for narrow-band              | to\        | **6 270**\   |        |
| > direct-printing (NBDP)       | **4 179**\ | \            |        |
| > telegraphy and data          | \          | *7 f.\       |        |
| > transmission systems at      | *5 f.*\    | 0.5 kHz*     |        |
| > speeds not exceeding 100 Bd  | *0.5 kHz*  |              |        |
| > for FSK and 200 Bd for PSK\  |            |              |        |
| > *d) j) m)*                   |            |              |        |
+--------------------------------+------------+--------------+--------+
| > Limits (kHz)                 | 4 179.25   | 6 270.25     |        |
+--------------------------------+------------+--------------+--------+
| > Frequencies assignable to    |            |              |        |
| > ship stations for data       |            |              |        |
| > transmission\                |            |              |        |
| > *p)* *m)*                    |            |              |        |
+--------------------------------+------------+--------------+--------+
| > Limits (kHz)                 | 4 186.75   | 6 284.75     |        |
+--------------------------------+------------+--------------+--------+
|                                |            |              |        |
+--------------------------------+------------+--------------+--------+
|                                |            |              |        |
+--------------------------------+------------+--------------+--------+
|                                |            |              |        |
+--------------------------------+------------+--------------+--------+
| > *f) h) p)\                   | **4 187**\ | **6 285**\   |        |
| > *Frequencies assignable to   | to\        | to\          |        |
| > ship stations for data       | **4 202**  | **6 300**    |        |
| > transmission *m)*            |            |              |        |
+--------------------------------+------------+--------------+--------+
| > \...                         |            |              |        |
+--------------------------------+------------+--------------+--------+

Table of frequencies (kHz) to be used in the band between 4 000 kHz and
27 500 kHz\
allocated exclusively to the maritime mobile service (*continued* )

+--------------------------------+--------------+-------------+-------+
| Band (MHz)                     | 4            | 6           | >     |
|                                |              |             |  \... |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 202.25     | 6 300.25    |       |
+--------------------------------+--------------+-------------+-------+
| > Frequencies (non paired)     | **4 202.5**\ | *           |       |
| > assignable to ship stations  | to\          | *6 300.5**\ |       |
| > for data transmission        | **4 207**    | to\         |       |
| > systems\                     |              | **6 311.5** |       |
| > *p)*                         |              |             |       |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 207.25     | 6 311.75    |       |
+--------------------------------+--------------+-------------+-------+
| > Frequencies assignable       | **4 207.5**\ | **6 312**\  |       |
| > to ship stations for digital | to\          | to\         |       |
| > selective calling *k) l)*    | **4 209**\   | *           |       |
|                                | \            | *6 313.5**\ |       |
|                                | *4 f.\       | \           |       |
|                                | 0.5 kHz*     | *4 f.\      |       |
|                                |              | 0.5 kHz*    |       |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 209.25     | 6 313.75    |       |
+--------------------------------+--------------+-------------+-------+
| > Frequencies assignable to    |              |             |       |
| > coast stations for data      |              |             |       |
| > transmission *n) o)* *p)*    |              |             |       |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 214        | 6 317.5     |       |
+--------------------------------+--------------+-------------+-------+
| > Frequencies (paired)         | **4          | **6         |       |
| > assignable to coast stations | 214.25**\    | 317.75**\   |       |
| > for NBDP and data            | to\          | to\         |       |
| > transmission systems, at     | **4          | **6         |       |
| > speeds not exceeding 100 Bd  | 216.25**\    | 320.7**\    |       |
| > for FSK and 200 Bd for PSK\  | \            | \           |       |
| > *d)*                         | *6 f.\       | *8 f.\      |       |
|                                | 0.5 kHz*     | 0.5 kHz*    |       |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 216.5      | 6 321       |       |
+--------------------------------+--------------+-------------+-------+
| > Frequencies assignable to    |              |             |       |
| > coast stations for data      |              |             |       |
| > transmission *p)*            |              |             |       |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 219.25     | 6 330.75    |       |
+--------------------------------+--------------+-------------+-------+
| > Frequencies assignable       | **4 219.5**\ | **6 331**\  |       |
| > to coast stations for        | to\          | to\         |       |
| > digital selective calling\   | **4 220.5**\ | **6 332**\  |       |
| > *l)*                         | \            | \           |       |
|                                | *3 f.\       | *3 f.\      |       |
|                                | 0.5 kHz*     | 0.5 kHz*    |       |
+--------------------------------+--------------+-------------+-------+
| > Limits (kHz)                 | 4 219.25     | 6 330.75    |       |
+--------------------------------+--------------+-------------+-------+

Table of frequencies (kHz) to be used in the band between 4 000 kHz and
27 500 kHz\
allocated exclusively to the maritime mobile service (*end* )

+---------------------------------+--------------+-------------+------+
| Band (MHz)                      | 4            | 6           | >    |
|                                 |              |             | \... |
+---------------------------------+--------------+-------------+------+

+---------------------------------+--------------+-------------+------+
| > Frequencies assignable        |              |             |      |
| > to coast stations for         |              |             |      |
| > wide‑band telegraphy,         |              |             |      |
| > facsimile, special and data   |              |             |      |
| > transmission systems and      |              |             |      |
| > direct-printing telegraphy    |              |             |      |
| > systems *p)*                  |              |             |      |
+---------------------------------+--------------+-------------+------+

+---------------------------------+--------------+-------------+------+
| > Frequencies assignable        | **4 352.4**\ | *           |      |
| > to coast stations for         | to\          | *6 502.4**\ |      |
| > telephony, duplex operation   | **4 436.4**\ | to\         |      |
| > *a)* *p)*                     | \            | *           |      |
|                                 | *29 f.\      | *6 523.4**\ |      |
|                                 | 3 kHz*       | \           |      |
|                                 |              | *8 f.\      |      |
|                                 |              | 3 kHz*      |      |
+---------------------------------+--------------+-------------+------+
| > Limits (kHz)                  | 4 438        | 6 525       |      |
+---------------------------------+--------------+-------------+------+

**Reasons:** It should be modified to use these frequency bands for data
transmission.

**NOC** ASP/41A13/116

Notes *a)*, *c)* to *d)*; whereas the "*b)*" in the table on page 6
should be suppressed.

**SUP** ASP/41A13/117

Notes *e)* to *g)*

**Reasons:** Notes *b)* and *e)* to *g)* should be suppressed since
Section III on NBDP, Section IV on Morse telegraphy (calling) and Morse
telegraphy (working) in Part B are proposed to be deleted.

**NOC** ASP/41A13/118

Notes *h)* to *l)*

**MOD** ASP/41A13/119

*m)* Frequencies from these frequency bands may also be used for A1A or
A1B Morse telegraphy subject to not claiming protection from other
stations in the maritime mobile service using data transmissions.

**Reasons:** The introduction of new HF data communication described in
Recommendation ITU-R M.1798 is acceptable, however there are still many
ships using Morse telegraphy communications. The proposed modification
intends to allow continuous use of the Morse telegraph communications by
the existing ships.

**NOC** ASP/41A13/120

Notes *n)* to *o)*

**MOD** ASP/41A13/121

*p)* These sub-bands, except the frequencies referred to in Notes *j)*,
*n)* and *o)*, could also be used for the initial testing and the
introduction within the maritime mobile service of new digital
technologies described in Recommendation ITU‑R M.1798.

**Reasons:** It should be modified to use these frequency bands for data
transmission.

**MOD** ASP/41A13/122

PART B -- Channelling arrangements

Section I -- Radiotelephony

6 *a) \...*

**ADD** ASP/41A13/123

*d)* The channelling arrangement specified in Sub-Sections A and B does
not prejudice the rights of administrations to establish, and to notify
assignments to stations in the maritime mobile service other than those
using radiotelegraphy, provided that:

-- the occupied bandwidth does not exceed 2 800 Hz and is situated
wholly within one frequency channel.

**Reasons:** This will allow the use of digital technology by the
administrations within the maritime radiotelephone for coast and ship
stations.

Section II -- Narrow-band direct-printing telegraphy (paired
frequencies)

**MOD** ASP/41A13/124

Table of frequencies for two-frequency operation by coast stations (kHz)

+---------+------------+------------+------------+------------+-------+
| Channel | 4 MHz      |            | 6 MHz      |            | >     |
|         | band^ 1^   |            | band^ 3^   |            |  \... |
+---------+------------+------------+------------+------------+-------+
| No.     | Transmit   | Receive    | Transmit   | Receive    |       |
+---------+------------+------------+------------+------------+-------+
|  1\     |            |            |            |            |       |
|  2\     |            |            |            |            |       |
|  3\     |            |            |            |            |       |
|  4\     |            |            |            |            |       |
|  5      |            |            |            |            |       |
+---------+------------+------------+------------+------------+-------+
|  6\     | > 4 214\   | > 4 176\   | > 6 317.5\ | > 6 266\   |       |
|  7\     | > 4 214.5\ | > 4 176.5\ | > 6 318\   | > 6 266.5\ |       |
|  8\     | > 4 215    | > 4 177    | > 6 318.5\ | > 6 267\   |       |
|  9\     |            |            | > 6 319    | > 6 267.5  |       |
| 10      |            |            |            |            |       |
+---------+------------+------------+------------+------------+-------+
| 11\     | >          | >          | > 6 268 2\ | > 6 268 2\ |       |
| 12\     | 4 177.5 2\ | 4 177.5 2\ | > 6 319.5\ | > 6 268.5\ |       |
| 13\     | > 4 215.5\ | > 4 178\   | > 6 320\   | > 6 269\   |       |
| 14\     | > 4 216\   | > 4 178.5\ | > 6 320.5\ | > 6 269.5\ |       |
| 15      | > 4 216.5  | > 4 179    | > 6 321    | > 6 270    |       |
+---------+------------+------------+------------+------------+-------+
| 16\     |            |            |            |            |       |
| 17\     |            |            |            |            |       |
| 18\     |            |            |            |            |       |
| 19\     |            |            |            |            |       |
| 20      |            |            |            |            |       |
+---------+------------+------------+------------+------------+-------+
| 21\     |            |            |            |            |       |
| 22\     |            |            |            |            |       |
| 23\     |            |            |            |            |       |
| 24\     |            |            |            |            |       |
| 25      |            |            |            |            |       |
+---------+------------+------------+------------+------------+-------+
| 26\     |            |            |            |            |       |
| 27\     |            |            |            |            |       |
| 28\     |            |            |            |            |       |
| 29\     |            |            |            |            |       |
| 30      |            |            |            |            |       |
+---------+------------+------------+------------+------------+-------+
| 31\     |            |            |            |            |       |
| 32\     |            |            |            |            |       |
| 33\     |            |            |            |            |       |
| 34\     |            |            |            |            |       |
| 35      |            |            |            |            |       |
+---------+------------+------------+------------+------------+-------+

**Reasons:** These frequency bands should be deleted in accordance with
the proposed deletion of NBDP frequency bands in Part A.

**SUP** ASP/41A13/125

Section III -- Narrow-band direct-printing telegraphy\
(non-paired frequencies)

**Reasons:** The entire section of NBDP should be suppressed for the use
of data transmission.

**SUP** ASP/41A13/126

Section IV -- Morse telegraphy (calling)

**Reasons:** The entire section of Morse telegraphy (calling) should be
suppressed for the use of data transmission.

**SUP** ASP/41A13/127

Section V -- Morse telegraphy (working)

**Reasons:** It is proposed to suppress the entire section of Morse
telegraphy (working) for the use of data transmission.

# Resolution 544

**NOC** ASP/41A13/128

APT supports no additional allocation to the HF broadcasting service.

# Review of allocation in the bands 4-10 MHz

**NOC** ASP/41A13/129

APT supports no change in the current Table of Frequency Allocations in
the 4-10 MHz band.

**Reasons:** The frequency band 4-10 MHz is heavily used by existing
services.

\_\_\_\_\_\_\_\_\_\_\_\_

[^1]: ^\*^ *Note by the ITU Secretariat:* There is inconsistency between
    these figures. There are additional inconsistencies in the figures
    included in this Table.