LA_Guy said:Radio's peak heyday was in the period from 1930-1955 with a resurgence from 1964-1980.
That's off by quite a bit. Radio's golden age tapered off between about 1949 and the lift of the TV freeze and the sign on of many new TV stations... 1953 perhaps. The resurgance came with the combination of the onset of rock n roll and the growth of music formats, with 1957 being the likely big upturn. This can be verified in the radio billings reports in Broadcasting Magazine, the Yearbook and Radio Annual from Radio Daily.
By the mid 1950s, netwpork radio shows were on TV, so radio stagnated-until rock and roll radio began showing up in the mid 1960s. This inspired a whole new group of listeners- the 13-25 year olds. Top 40 radio soon followed, with it's tight playlists, jingles and excitement.
Top 40 was born in August of 1952.
FM radio began to come of age in the late 1970s, initially siphoning off the college age crowd with its progressive album oriented sound.
Actally, FM came of age right after the simulcast ban in 1967, and by the late 70's it had more audience than AM did. The first successful FM formats on a mass scale were Beautiful Music, not progressive rock. Progresive rock was not all that commercially successful, and it was not until 1972 and beyond that formatted AOR developed by Lee Abrams made AORs quite successful, too.
Finally, top 40 wound up on FM as well.
Finally? There were FM top 40's back to the 60's, as well as dozens and dozens of FM simulcasts.
The problem became what do we do with twice the number of stations than we had before?
The average market, once FM was viable, ended up with about 3 times the number of viable stations... ones with full market coverage. Most AMs by the end of the 50's had seen suburban sprawl outdistance their signals.
Add to this narrowcasting the fact that thanks to consolidation there's very little competition between stations any more and is it any surprise that people believe that as a whole radio sucks?
I remember Top 40 and AMs that played one song I loved, one that was OK, and one I hated out of every three songs. Specialization has made stations cater to specific taste groups, rather than general ones. For example, Cleveland, OH in the late 50's and early 60s had at any given time 3 Top 40's, 3 MOR's and 2 r&b stations. That's it... three formats. Now there are perhaps 20 formats on decent or tolerable signals... all going after the market's ad revenue. That is competiton.