Which type of emission is prohibited on amateur radio frequencies?

• A. SSB
• B. AM
• C. Frequencies above 30 MHz
• D. Music broadcasting

Answer: (D)

Music broadcasting is prohibited on amateur radio frequencies because amateur radio is primarily designated for personal use, experimentation, emergency communications, and public service, not for commercial broadcasting. The Federal Communications Commission (FCC) has established regulations that prevent amateur operators from transmitting music, as that would classify the operation as a broadcasting service, which requires a completely different set of licensing and regulatory compliance.

In contrast, single sideband (SSB) and amplitude modulation (AM) are both acceptable types of emissions and commonly used by amateur radio operators for voice communications. Frequencies above 30 MHz are still part of the amateur radio spectrum, and operators can use various types of emissions on those frequencies, as long as they adhere to the rules specific to amateur radio use. The prohibition against music broadcasting helps maintain the amateur bands for their intended purpose and guards against interference with other communications.