Archived—Proposed Revisions to the Canadian Table of Frequency Allocations (2009 Edition)

E3 (AI 1.15) - Secondary Allocation to Amateur Service in the 135.7-137.8 kHz Band

Background

For more than two decades, radio amateurs have been increasingly interested in experimenting with communications at low frequencies, and several countries around the world have granted allocations to the amateur service in the band 135.7-137.8 kHz. Radio amateurs conducting low-frequency experiments in this frequency band have taken measures to avoid interference to the operations of the primary users of the band, and no cases of interference have been reported. The aim of the WRC was to allocate the band 135.7-137.8 kHz to the amateur service on a secondary basis, along with a power limitation to protect the other services using the band.

Summary of Proposed Table Changes

130-160 kHz
130-135.7160 FIXED
MARITIME MOBILE

5.64

135.7-137.8

FIXED
MARITIME MOBILE
Amateur 5.67A

5.64

137.8-160

FIXED
MARITIME MOBILE

5.64

ADD 5.67A 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(WRC-07)

Discussion

There was worldwide consensus at WRC-07 to add a secondary allocation to the amateur service in the band 135.7-137.8 kHz, including a footnote limiting the amateur service maximum radiated power to 1 W e.i.r.p. Canada will align the Canadian Table with the international allocation.

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