clouseau said:I could be wrong, but I'm almost certain there were legal limits in the 60's-70's. IIRC a certain AM top 40 in Wildwood NJ used to have to get a waiver to "Annualize" their spotload so they could oversell the summers. That's 2nd had from a colloege roomate who worked there, but I have always assumed it was accurate.
I'll say it again: There were no limits. I was working in radio at that time, and worked on many renewal applications (remember the license term was three years back then). You had to tell the FCC how much commercial time you were running on the old renewal forms, but it was for information only and there were no specific limits in the rules. The FCC might have come back at you for what they considered excessive commercial loads, under the general heading of being contrary to the public interest, but again there was no specific number in the rules (probably one reason they stopped reviewing commercial loads...they were applying judgments based on nothing specific, which the courts don't tend to like). The only limit in place, an advisory one, was 18 minutes an hour under the old NAB Code of Good Practice.