DavidEduardo said:FredLeonard said:KeithE4 said:AM/FM radios weren't included as standard equipment in most cars until the '70s.
The late 70s.
Yet by 1977, without FM being standard on most cars, the FM band passed 50% of all listening.
I had a 1976 Olds Cutlass Supreme purchased new in March '76 with a Delco AM/FM Stereo Radio, which was an extra-cost option that cost about $250. The radio had 10 presets, 5 AM & 5 FM. By 1976, I was listening to music exclusively on FM. AM was for sports and news.
1976 was the first year WABC weekly ratings failed to top 5 million listeners. WABC remained the #1 station in New York despite a challenge from WNBC on AM and numerous FM competitors. It would all change in the summer of 1978 when WKTU @ 92.3 FM, then a floundering soft rock station, bet all their chips and flipped to disco. By October, WKTU was #1 in New York with approximately an 11 rating. WKTU was the catalyst that brought New York listeners to FM en masse. WABC's reign at the top of the ratings was over.