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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 15 to Document 41-E**

                                                   **22 August 2007**

                                                   **Original: English**

  Asia-Pacific Telecommunity Administrations       

  COMMON proposals for the work of the conference  

  Agenda item 1.15                                 

                                                   
  ------------------------------------------------ ----------------------------------------------------

1.15 to consider a secondary allocation to the amateur service in the
frequency band 135.7-137.8 kHz

### Introduction {#introduction .heading_b1}

Agenda item 1.15 is to consider a secondary allocation to the amateur
service in the band 135.7‑137.8 kHz. ITU‑R studies have shown that the
radiation efficiency is typically less than 1% from practical antennas
at typical amateur stations, resulting in practice in an e.i.r.p. of
about 1 W. Reception over long paths has been demonstrated using
receiving systems employing long integration times.

Two methods to satisfy the agenda item have been identified. Method A is
the addition of a new entry to the Table of Frequency Allocations.
Method B is the "No Change" method.

Since 1997, radio amateurs in some countries in parts of all three
Regions were granted authority to operate in the band. There have been
no reports of interference to other radiocommunication services.

ARTICLE 5

Frequency allocations

Section IV -- Table of Frequency Allocations\
(See No. 2.1)

**MOD** ASP/41A15/301

110-255 kHz

+----------------------+----------------------+----------------------+
| Allocation to        |                      |                      |
| services             |                      |                      |
+----------------------+----------------------+----------------------+
| Region 1             | Region 2             | Region 3             |
+----------------------+----------------------+----------------------+
| > **130-135.7**      | > **130-135.7**      | > **130-135.7**      |
| >                    | >                    | >                    |
| > FIXED              | > FIXED              | > FIXED              |
| >                    | >                    | >                    |
| > MARITIME MOBILE    | > MARITIME MOBILE    | > MARITIME MOBILE    |
| >                    | >                    | >                    |
| > 5.64 5.67          | > 5.64               | > RADIONAVIGATION    |
|                      |                      | >                    |
|                      |                      | > 5.64               |
+----------------------+----------------------+----------------------+
| > **135.7-137.8**    | > **135.7-137.8**    | > **135.7-137.8**    |
| >                    | >                    | >                    |
| > FIXED              | > FIXED              | > FIXED              |
| >                    | >                    | >                    |
| > MARITIME MOBILE    | > MARITIME MOBILE    | > MARITIME MOBILE    |
| >                    | >                    | >                    |
| > Amateur ADD 5.A115 | > Amateur ADD 5.A115 | > RADIONAVIGATION    |
| >                    | >                    | >                    |
| > 5.64 5.67          | > 5.64               | > Amateur ADD 5.A115 |
|                      |                      | >                    |
|                      |                      | > 5.64               |
+----------------------+----------------------+----------------------+
| > **137.8-148.5**    | > **137.8-160**      | > **137.8-160**      |
| >                    | >                    | >                    |
| > FIXED              | > FIXED              | > FIXED              |
| >                    | >                    | >                    |
| > MARITIME MOBILE    | > MARITIME MOBILE    | > MARITIME MOBILE    |
| >                    | >                    | >                    |
| > 5.64 5.67          | > 5.64               | > RADIONAVIGATION    |
|                      |                      | >                    |
|                      |                      | > 5.64               |
+----------------------+----------------------+----------------------+

**ADD** ASP/41A15/302

**5.A115** Stations in the amateur service using frequencies in the band
135.7-137.8 kHz shall not exceed a maximum radiated power of 1 W
(e.i.r.p.) and shall not cause harmful interference to stations of the
radionavigation service operating in countries listed in No. **5.67**.

**Reasons:** A secondary allocation to the amateur service in the
frequency band 135.7-137.8 kHz would harmonize on a worldwide basis the
use of this band and satisfy the requirement of the amateur service for
a very low frequency allocation.

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