AM modulation-dependent carrier level technology (or MDCL) can be used by licensed AM radio station to reduce power consumption and save money. MDCL is briefly summarized in the September 11, 2011 Public Notice DA 11-535. MDCL is covered under 47 CFR Section 73.1560(a) for the FCC's rules.
Notice to the FCC is required. Here are the steps to notify the FCC that MDCL will be employed:
- Log into LMS https://enterpriseefiling.fcc.gov/dataentry/login.html using the licensee’s FCC Registration Number (FRN) and Password (FRN’s password or Associated FCC Username’s password).
- At the top of the page select the Facilities tab.
- In the Find Facilities box enter the Facility ID or Callsign for the station.
- Click on the Facility ID for the station.
- Click on the File an Application button.
- From the drop-down menu, select Modulation Dependent Carrier Level (MDCL) Notification.
- Fill out the Application Sections (General Information, Applicant Information, Contact Representative, Digital Notification, Application Summary, and Certify).
- Submit Notification
An Excel spreadsheet list of AM broadcast stations currently authorized to use MDCL is available HERE.
Information about AM broadcast radio stations is available at the Audio Division on the FCC's website, and at Broadcast Radio Links.
FCC > Media Bureau > Audio Division, (202)-418-2700.