Radio Academy

See the invisible world of radio. Radio Academy is an interactive learning environment for radio frequency principles, electronics and practical communications. Build understanding through clear explanations, responsive visualisations and laboratory-style simulators instead of memorising isolated formulas. LEARN THE FOUNDATIONS • Explore 15 focused Academy modules • Understand frequency, wavelength, Ohm’s law and reactance • Study components, circuits, modulation and RF signal chains • Learn propagation, antennas, SWR and transmission lines • Explore digital radio, satellite communication, operating practice, safety, EMC and regulatory principles EXPERIMENT INTERACTIVELY • Visualise forward and reflected waves • Adjust antenna matching and observe SWR behaviour • Explore HF skywave propagation • Model RLC resonance and filter response • Test transmission-line mismatch and reflected power STUDY YOUR WAY • Bookmark important lessons • Write private lesson notes • Use adaptive review to revisit weaker topics • Take the mastery quiz and track progress • Set daily and weekly study goals • Export a learner-controlled progress summary BUILT WITH PRIVACY IN MIND No account, advertising or tracking is required. Study progress, notes, bookmarks and quiz history remain on your device. An optional live Space Weather feature can request public observations from NOAA; the app also includes an offline educational scenario. Radio Academy supports English, Traditional Chinese and Simplified Chinese. It uses a consistent light interface and requires iOS 17 or later. Educational content and simulations are approximations. Always check current official licence conditions, band plans, RF exposure requirements and electrical safety procedures before operating or constructing equipment.