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Four full-page ads for CB radios! That's a lot of money being spent, and a good indication of the hugeness of the CB fad (1975-1978!) which was cresting right around this time. What I love about all these ads is the tone of utter seriousness which today comes across as totally ludicrous, like Pearce-Simpson's Hetro-Lock™ and Receiv-O-Slide technology described in the copy above. Hetro-Lock™ and Receiv-O-Slide! Filthy.
Below, I think Panasonic wins the design contest, which isn't surprising given their general excellence during the 70s:
CB radios, due to numerous regulations and conventions, were basically all exactly the same, so how to distinguish your product? Cobra tackles this challenge by inventing a mythical quality they call Punch:
This one is my favorite. Just look at how much assistance this helpless, stranded, foxy motorist is getting:
Looks like a tractor even came to help!