Canadian allocations changes under NARBA

The

to change frequency. This article details the major Canadian allocations changes under NARBA.

The principal reason for

public broadcaster and also its broadcasting regulator. Up to that point, these allocations had been dominated by commercial stations from the United States. Canada had only six clear-channel frequencies: 540, 690, 730, 840, 910, and 1050, of which 540, 730, and 910 were shared with Mexico, and 1050 was shared with the United States.^{[citation needed}

]

The result of the treaty for Canada was to add new clear-channel allocations at 740, 990, and 1010; with the expansion of the

kHz

, Canada would later add 1580.

Most stations throughout North America were minimally affected by the allocations changes. Their channels simply moved up (or in a few cases down) the dial to a new frequency which was shared (or not) with the same stations as were there before. Major Canadian cities, however, saw more changes, as the creation of the three new clear channels invited a reshuffle of channels among the existing broadcasters. (No new Canadian stations were licensed as a part of this process.) The major changes were as follows:

In the
CBA in Sackville, New Brunswick
moved from 1050 to 1070. There were (and are) no other clear-channel stations in the Maritimes.

In
CBF moved from 910 (which would have become 940) to 690, paving the way for CBM
to move from 960, a regional channel, to clear-channel 940.

In
CBL moved from 840 (which would have become 860) to the new clear, 740. This allowed CFRB
to move from 690 to 860, freeing up 690 for use in Montreal.

In Manitoba, Winnipeg's CKY moved from 910 to 990. (The channel would eventually be taken over by the CBC.)
In
CFCN
moved from 1030 to 1010; that channel would also eventually be taken over by the CBC.
In
Vancouver's CBR
moved from 1100 to 1130, both secondary assignments on a U.S. clear channel. (It would only later move to 690, opening up the 1130 allocation for a commercial station in Vancouver.)

References

List of all Canadian stations before and after NARBA (listed geographically, east-to-west)
Canadian station assignments by frequency (Arrangement between the United States of America, Canada, Cuba, the Dominican Republic, Haiti, and Mexico, comprising recommendations of the North American Regional Radio-Engineering Meeting (supplemental to North American Regional Broadcasting Agreement, Habana, 1937). Signed at Washington January 30, 1941; effective March 29, 1941, pages 1408-1410)