Built to learn RF engineering and AI — free calculators, interactive labs, and learning tools
Radio is invisible, but its puzzles are everywhere. Pick one — each answer is an interactive you can poke at.
Materials absorb and reflect radio waves — see which ones hurt most.
Double the frequency, add 6 dB of loss. Run the numbers yourself.
AM radio to radar — scroll the entire allocated spectrum.
Because multiplying billion-to-one ratios is miserable. Adding is easy.
Antenna gain: the same power, squeezed into a laser-thin beam.
Modulation — watch bits become constellation points.