Technical Properties of the Arbitron PPM System Aug 19, 2009 9:00 AM, By Barry Blesser Arbitron’s Portable People Meter (PPM) system is currently replacing its old paper diary system. There are a ...

When Arbitron Inc. launched its Portable People Meter radio audience measurement technology, critics — including a PPM Coalition of minority broadcasters — warned that the ratings system was flawed, ...

Federal Communications Commissioner Jonathan Adelstein has asked that the agency look into the Arbitron Portable People Meter (PPM), the media metrics company's controversial new automated system for ...

Arbitron said its Personal People Meter has been upgraded so it can distinguish between in- and out-of-home media exposure. The enhanced system uses radio frequency codes transmitted at low levels by ...