Arbitron has released its RADAR 101 June 2009 radio network ratings report, showing that over 186 million persons 12+ heard one or more network radio commercials each week of the survey period. The RADAR 101 survey period saw an increase in the number of people reached by network radio from the RADAR 100 period for key buying and selling demographic groups. Among the prime audience demographics sought by advertisers, the commercials aired on the 58 radio networks reached: 73. percent of Persons 12+; 73.5 percent of Persons 18+; 73.5 percent of Persons 35+; 74.5 percent of Persons 18-49 and 75.1 percent of Persons 25-54.

Dial Global Contemporary Network was the top-rated network for persons 25-54 with a 2.6 share, followed by Dial Global Contemporary FM Network and Dial Global Adult Power. Premiere Male Focus Network and Dial Global Music & Entertainment rounded out the top five.

For persons 18-49, Dial Global Contemporary FM Network was the highest-rated network, with a 2.6 share, tied with Dial Global Contemporary Network but with a larger average audience. Dial Global held all top five spots for 18-49 year-old listeners, with Dial Global Female Perspective and Dial Global Music & Entertainment in fourth and fifth place.

In data released last week from RADAR 101, Arbitron found that radio currently reaches over 235 million listeners ages 12+ during an average week. RADAR 101 data also shows that radio reaches 92 percent of persons 12+ each week. Also, 89 percent of the youngest radio audience, teens ages 12-17, tune in each week.

RADAR 101 is also the seventh RADAR report to incorporate both PPM and diary respondents.