1966–1974NBC peacock logo. It was used at the beginning of programs broadcast in color, and was used until all CBC television programs had switched to color.
The main on-air identification featured the logo kaleidoscopically morphing into its form while radiating outward from the centre of the screen on a blue background. This animated version, which went to air in December 1974, is also known colloquially as "The Exploding Pizza". This logo was originally accompanied by a three-note jingle performed on a vacuum-tube synthesizer (for the English version used by CBC Television) or by an orchestral woodwind section (for the French version used by Radio-Canada). This was later replaced in the fall of 1975 by the more familiar 11-note synthesized jingle, which was used until December 31, 1985.
These idents consisted of different background colors corresponding to the time of day behind a translucent CBC gem logo, accompanied by different arrangements of the CBC's new, orchestrated five-note jingle. The logo was changed to one color, generally dark blue on white, or white on dark blue, in 1986. Print ads and most television promos, however, have always used a single-color version of this logo since 1974.
In November 1992, CBC updated its logo design to make it simpler and more red (or white on a red background). The new logo design, created by Swiss-Canadian design firm Gottschalk + Ash, reduces the number of geometric sections in the logo to 13 instead of the previous logo's 25, and the "C" in the centre of the logo became a simple red circle. It is now CBC's longest-used logo, surpassing the original incarnation of the Gem logo and the CBC's 1940 logo.
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