This bulletin provides radio stations, advertisers, agencies, and other users of Arbitron Portable People Meter™ (PPM) data with information regarding market specification changes and key dates, and with other information regarding Arbitron’s reports and services.

PPM Report Periods

Audience estimates in each Arbitron PPM Radio Market Report are based on a four-week report period. This bulletin covers the three report periods below. This bulletin may be supplemented by additional bulletins as warranted.

PPM Release Schedules and Methodology

Additional information on the release schedule for PPM audience estimates and data, and information on PPM methodology, is available at the Arbitron website at:

http://www.arbitron.com/portable_people_meters/home.htm

Note: Although all PPM markets utilize methodology that is similar in many respects, Houston-Galveston served as a PPM Demonstration market prior to the start of its conversion into a PPM Currency market. As a result, the Houston-Galveston market employs methodology that may differ in some respects from the methodology in other PPM Pre-Currency and Currency markets. Subscribers may also wish to note that Arbitron’s Houston-Galveston PPM radio ratings data have received accreditation from the Media Rating Council® (MRC).

Market Specification Changes

No changes in ethnic controls or market definition are planned for any of the above PPM radio markets during the April 2008, May 2008, and June 2008 report periods.

Metro Definition Reevaluation Requests

Arbitron Metro Survey Area definitions are reevaluated on a decennial basis, taking into account updated commuting data published in the decennial census. Arbitron Metro Survey Area definitions may also be reevaluated at the request of report subscribers.

Subscribers should note, however, that Metro Survey Area definition changes in any market scheduled for conversion from Diary measurement to PPM measurement must be finalized within the 12 months prior to the market’s first Pre-Currency report period. Requests for Metro Definition revaluations of any market scheduled for conversion to PPM measurement should therefore be made more than 12 months in advance of Pre-Currency reporting. In addition, to ensure a smooth transition from Diary measurement to electronic measurement, market definition requests involving the addition or deletion of Metro counties (or county equivalents) will not be considered for any PPM Currency or Pre-Currency market until three years after the market’s first Pre-Currency report period, or until January 2011, whichever comes first. Arbitron will continue to implement changes involving the creation or consolidation of split counties (or county equivalents) in Diary markets that have been converted to PPM markets, provided the changes do not require the addition or deletion of the corresponding whole counties.

Total Line Reporting

Broadcasters are reminded that, in order to be eligible for Total Line Reporting for any PPM survey month, stations must simulcast all programming 100%, including commercials, throughout the three-month interval corresponding to Arbitron’s quarterly survey period.

Encoding

Arbitron will provide encoding equipment at no cost for each eligible AM or FM station that chooses to encode. AM and FM stations are eligible to encode their signals, and to receive encoding equipment, regardless of subscriber status. Encoding equipment will also be available for HD-Multicast stations and streaming Internet stations (scheduled to become eligible for reporting after the report periods covered in this bulletin). Arbitron will generally provide subscribers with encoding equipment for these stations at no cost, subject to limitations. Encoding equipment will also be available for lease to non-subscribers wishing to encode their HD-Multicast and streaming Internet stations.

No Metro audience estimates will be tabulated or reported for stations that choose not to encode. Once a market is converted to PPM electronic measurement, estimates based on Diaries will no longer be available.

Although a station may begin encoding after the reporting period begins, stations should note that audience estimates will not be adjusted to exclude unencoded intervals. For example, audience estimates for a station that begins encoding the third week of the report period will include two weeks of zero listening averaged with listening that occurs during the third and fourth weeks of the report period. Similarly, any portion of a day during which a station’s signal is not encoded will be counted as zero listening, since no meter will be able to detect listening to the station. It is for that reason that Arbitron provides a monitor and a backup encoder. Close attention to the guidelines and recommendations below will help ensure that each station’s audience estimates reflect any listening that occurs during the station’s broadcast hours:

• Stations will need to give high priority to ensuring the encoder is operating. Although the encoder is easy to use, the encoder will need monitoring. The station will need to monitor encoding at all times. We will provide the station with the tools (encoding monitor, backup encoders and associated documents) to make this possible.
• Arbitron’s Encoding Operations staff will be available to help the station begin encoding. Working in cooperation with Arbitron’s Encoding Operations staff, the station engineer will have the tools necessary to ensure the effective installation of encoding equipment. A staff member also will be available 24 hours a day to address questions or concerns regarding operation of the encoding equipment.
• In the event of an encoder failure:
  • The station should switch to the Backup or Spare encoder immediately!
  • The station should contact Arbitron Encoding Operations.
• Notes:
  • Each AM station, FM station, Internet stream and HD Multicast station should be encoded separately unless expressly instructed otherwise by Arbitron.
  • Upon request, Arbitron will note, on the Special Notices page of the applicable PPM Radio Market Report, any technical difficulties or unencoded intervals (as defined by Arbitron) that a qualifying station reports to Arbitron (subject to verification where applicable).
  • Encoding equipment should be used only as instructed by Arbitron. Arbitron may request the return of its encoding equipment from, or decline to publish audience estimates for, any station that uses Arbitron’s encoding equipment in an unauthorized manner.

Encoding Steps

The following steps are necessary to ensure that the equipment is correctly selected, installed, and tested before the station is fully encoded and eligible for audience estimates:

• The station signs and returns an encoding agreement.
  This will help clarify the parties’ respective responsibilities.

• The equipment is shipped.
  A representative from Arbitron Encoding Operations will contact the station engineer to assess the station’s technical needs. Arbitron then ships the appropriate equipment.

• The equipment is installed.
  Once received, the engineer should install the encoding equipment (main and backup encoders) and in-station encoding monitor as soon as possible.

• The equipment is tested.
  Once the equipment is installed, the station engineer and Arbitron Encoding Operations need to test each encoder (main and backup) to make sure the equipment is functioning properly. This will require an off-air audio sample from each encoder.
  

• Arbitron confirms the station is properly encoded.
  Once all components have been tested, Arbitron will provide the station with confirmation that the station is considered encoded and eligible for reporting.

• The station monitors its encoder status.
  Following installation of the encoder, it is the station’s responsibility to monitor the encoding status using the provided in-station monitor. Arbitron’s engineers recommend connecting the monitor to the station’s existing air-fault alarm system.

Station Information

Radio stations in PPM markets will continue to receive quarterly Station Information Packets (SIPs). We ask that stations in PPM markets continue to complete and return the packets on a timely basis. Stations may further update their submitted Station Information at any time. Arbitron strongly encourages stations to note the following:

• Stations should continue to submit Station Information Profiles (SIPs).
  Station Information Profiles will still be needed to enable Arbitron to report detailed and timely station information such as format. For stations that reach into adjacent markets in which Diaries are used, Station Names will continue to be used to assign listening credit in the adjacent markets. The careful and timely submission of Station Names may therefore continue to be important.

• Stations should notify Arbitron of Frequency Moves, “Hot” Call Letter Changes, and other complex changes in advance.
  These changes will continue to have important reporting implications. By notifying us in advance, Arbitron can work with stations to ensure that their estimates are reported most appropriately. We will not be able, for example, to implement frequency moves retroactively.

• Stations should promptly notify Arbitron about call letter changes and other Station Information changes.
  With more frequent and timely reports than our quarterly diary service, updates will have to be processed quickly. We may be unable to note call letter changes and other important changes if stations delay notifying us. Station Information changes must be received by the last day of the applicable report period.

Key Dates

Station Information updates will be accepted through the last day of the applicable report period.

Please address updates to:

Address:
Radio Station Relations
Arbitron Inc.
9705 Patuxent Woods Drive
Columbia, MD 21046-1572
Attention: Station Information

Phone: (410) 312-8062
Fax: (410) 312-8619

Station Information updates will be acknowledged by e-mail, letter, or postcard.

The policy and procedure amendment(s) set forth in this bulletin are hereby incorporated by reference into, and deemed to amend and supersede in pertinent part, the most recent Description of Methodology as published in the Local Radio Market Report or as otherwise furnished to subscribers.

For more detailed information on the topics in this bulletin, including the specific markets affected by Arbitron’s ongoing efforts to improve sample quality, please contact your local Arbitron sales representative.

Portable People Meter™, PPM™, Arbitron eBookSM, PPM Analysis Tool™ and PPM Weeklies™ are marks of Arbitron Inc.

Media Rating Council® (MRC) is a registered mark of the Media Rating Council.