Arbitron: PPMs Track HD Radio

Arbitron has announced that its portable people meter (PPM) system can track HD radio technology, including its separately encoded sub-channels. The trials took place the week of July 28 on the digital channels of a radio station in one of the top ten metros; Arbitron did not release the name of the radio station. Arbitron tested the PPM system with HD Radio technology to determine if separately encoded sub-channels could be tracked by its portable audience measurement system. The trials showed that separately encoded multicast channels did not conflict with the main channel's encoding.