This is one of a handful of airchecks in my collection from the United Kingdom. 97.4 Rock FM sounds quite different from any U.S. station I’m aware of that calls or brands itself as “Rock”!
Per info supplied by Neal Bowden when this aircheck originally appeared on this site in 2011: There is an urban myth the name Rock FM comes from Blackpool rock, which is a very hard stick of candy. http://en.wikipedia.org/wiki/Rock_(confectionery) Blackpool is in the heart of the stations coverage area and a lot of people take vacation there every year. It never has been and never will be a rock station!
Thanks to Ryan Bishop for finding and supplying the logo.