How soon may you operate a transmitter on an amateur service frequency after you pass the examination required for your first amateur radio license?

You may operate a transmitter on an amateur service frequency as soon as your name and call sign appear in the FCC's Universal Licensing System (ULS) database. This is the official system that the FCC uses to manage and maintain information about all licensed amateur radio operators. Once you pass your examination and your application is processed, the information—including your call sign—will typically be entered into the ULS system.

Operating as soon as your name and call sign appear in the database is beneficial because it allows you to start using your license without needing to wait for the physical copy of your license to arrive in the mail. This timely access aligns with the spirit of amateur radio, which emphasizes the importance of community engagement and operational readiness.

The other options imply waiting periods or conditions that are not necessary once your details are updated in the ULS. For instance, waiting for 30 days or until you receive your physical license would unnecessarily delay your ability to operate, contrary to the streamlined access intended for newly licensed operators.