Often, while researching history of part 15 am, I ponder on how the FCC and the CRTC work together..
I know nothing about the history of Canadas equivalent to part 15AM (RSS-210), but am begining to wonder more about it after noticing some old magazine and newspaper mentions in the late 1930s, just before Part 15 was created For example, in Radio & TV News - July 1938 page 69 (excerpts)
"THE FCC has taken a decided step toward helping the elimination of interference.. ..The Commission will be glad to furnish an opinion as to the type of filter which may be used for the practical elimination of interference potentialities. "This closely follows the Canadian Commission's system of eliminating interference from broadcasts. The Canadian Commission, however, maintains a group of troubleshooters, who go out and locate the interference and remedy it.
Interference with radio programs in Canada is a serious occurrence, and it is to their credit that the programs in Canada are freer from this annoyance than those of the United States. * *
And this one from August 1938 Radio News:
"...Yielding to the pressure of the millions who enjoy their broadcast radio reception, the F.C.C., on May 28, 1938, submitted a bill to Congress which stated, "no person shall operate or cause to be operated any apparatus which uses r.f. electrical current as an essential to its operation ... in any manner inconsistent with the rules, regulations, restriction or conditions which the Commission may prescribe under ... this section." The Commission, in recommending that Congress pass this bill, predicted that "the use of a large part of the radio spectrum for communications purposes will be destroyed," unless some laws and measures can be passed for the suppression of electronic interference. ...In presenting this act to Congress, the F.C.C. follows the lead taken by the Canadian Communications Commission prohibiting radio interference of any kind...."
Other articles like these about Canada leading the way into establishing interference laws is kind of intriguing.