Lesson 2 — Spectrum & Propagation

Where radars live in the spectrum, how energy spreads on the way to the target and back, and the 6 dB rules of thumb that let you reason about free-space path loss without a calculator.

Reading

Spectrum & Propagation

Radar bands (L–Ka), the wavelength–frequency relation, free-space path loss, antenna gain, and beamwidth.

Flashcards

Review deck

Key terms and relations from the lesson, in a self-test deck.

Demo

Free-Space Path Loss

Sweep frequency and range, snap to radar bands, and watch the 6 dB doubling rules in action.

Pre-flight

Pre-flight quiz

Pre-class check, due before the lesson. Counts toward your IP grade.