On March 6, 2025, the San Bruno Amateur Radio Club (SBARC) partnered with Scout Troops 72 and 4172 to help Scouts work toward earning their Radio Merit Badge. The session was held at the San Bruno City Emergency Operations Center (EOC) and was designed to introduce Scouts to the fundamentals of radio communication while highlighting the real-world role of amateur radio in public service and emergency preparedness.
SBARC members Mandi Heathcote (KO6DRD), Jerry Heathcote (KO6DQR), and Dave Dornlas (KN6KOO) led the presentation and hands-on discussions, sharing both technical knowledge and practical experience with the Scouts.
The session began by answering a foundational question: What is radio? Scouts learned that radio is a form of wireless communication that uses electromagnetic waves to transmit information—such as voice, data, and signals—through the air without the need for physical connections like wires or cables. From there, the discussion expanded into how radio is used every day, from broadcast stations to two-way communications systems.
A key topic was the difference between broadcast radio and hobby (amateur) radio, as well as the distinction between one-way broadcasting and two-way communications. Scouts learned how broadcast stations transmit information to many listeners, while amateur radio allows operators to communicate directly with one another. This led naturally into a discussion of radio call signs, how they are used in broadcast radio versus amateur radio, and the legal identification requirements for each service.
To support clear and accurate communication, Scouts were introduced to the phonetic alphabet and practiced using it to spell words clearly over the air. They were also introduced to commonly used amateur radio terms and Q signals, including QTH (location), QRM (interference), QRZ (who is calling), QSB (signal fading), and QSY (change frequency), giving them a taste of real-world radio operating language.
The presentation also covered how radio signals travel. Scouts learned the difference between local stations and distant (DX) stations, and how propagation affects what can be heard on the air. They were shown how time and frequency stations WWV and WWVH can be used to assess shortwave conditions and help predict what signals may be audible. To reinforce this, the group reviewed the electromagnetic spectrum, focusing on the portion from 300 kHz to 3000 MHz, where many radio services operate.
Public safety applications were emphasized throughout the session. Scouts learned how NOAA Weather Radio (NWR)provides continuous weather information and emergency alerts, often when other communication systems fail. The group also discussed cellular telephones, how they work, and their benefits and limitations during emergencies—particularly when networks become congested or lose power.
Safety was another important focus. The Scouts reviewed general safety precautions for working with radio equipment, including proper grounding of direct current circuits, power outlets, and antenna systems. These discussions emphasized both personal safety and protecting sensitive equipment.
Scouts were also introduced to career opportunities in radio, including broadcasting, communications engineering, and public safety communications. This tied into a broader discussion of the role of the Federal Communications Commission (FCC), why it regulates radio in the United States, and how it differs from the International Telecommunication Union (ITU), which coordinates radio services internationally.
A significant portion of the session focused on amateur radio specifically—why the FCC maintains an amateur radio service and how it supports self-training, technical experimentation, and emergency communication. Scouts learned about the different license classes (Technician, General, and Amateur Extra), the privileges each provides, and how amateur radio exams are administered by Volunteer Examiners.
To bring everything together, the Scouts were shown how an emergency call could be made using either voice or Morse code, and how proper procedures help ensure assistance is received quickly. The session concluded with a simulated amateur radio contact, demonstrating proper use of call signs, abbreviations, signal reports, and logging—helping Scouts see how all of the concepts fit together in real-world operation.
Overall, the event provided Scouts from Troops 72 and 4172 with a broad and engaging introduction to radio communications and amateur radio. SBARC was proud to support their progress toward earning the Radio Merit Badgeand to share how radio continues to play a vital role in technology, public service, and emergency preparedness.