Free Websites for Radio Market Data

Check out these free sites.  Horn Library does not have subscriptions to these services but they have some information that you may find valuable.

Arbitron 

Leads to links about the radio markets and some special glimpses of reports.

Arbitron's Key Trade Terms   

Dictionary of industry terms.

Major Radio Markets   

Ratings of Arbitron's major radio markets. It appears to be updated monthly. Click on "Ratings" on the top menu bar.