Radio engineering exercises with worked solutions
You learn calculating by calculating. The exercise sets lead from basics to the Smith chart and modulation spectrum; every exercise has a complete worked solution and a calculator to check the result.
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What the page does
- 68 exercises in topical sets
- Complete worked solution step by step
- A calculator to reproduce each exercise
- Exercises on antennas, propagation, modulation and decoders
- Progress stays in the browser
Background
A typical exercise: how long is a half-wave dipole for 7.1 MHz? With L ≈ 142.5 / f that is about 20.1 m. Or: what share of the power is reflected at an SWR of 3? |Γ| = (3 − 1) / (3 + 1) = 0.5, so 25 % is reflected. The exercises show each of these steps individually.
In practice
How it works: choose an exercise set and work the problems yourself first. Only then open the worked solution and compare step by step. Where your result differs, the linked calculator helps find the mistake. The sets build on each other, but you can start with any topic.
Frequently asked questions
Are the exercises free?
Yes, permanently.
Do I need an account?
No. Progress is stored in the browser.