SESK: Stuff Everyone Should Know · sesk.info/hame-smith-chart-use
What can be calculated using a Smith chart?
Impedance along transmission lines.
- Antenna radiation pattern
- Radiation resistance
- Impedance along transmission lines ✔
Why: A Smith chart plots resistance and reactance on circles and arcs. It lets you track how impedance changes along a line and design matching stubs.
Huh, didn't know that: A Smith chart is built from resistance circles and reactance arcs (E9G04).
You know you might be a ham when you peak your drive, dip your plate and tune your load.
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References
Answer: Impedance along transmission lines. A Smith chart plots resistance and reactance on circles and arcs. It lets you track how impedance changes along a line and design matching stubs.
- NCVEC 2024-2028 Amateur Extra Question Pool, 4th Errata (Feb 4, 2026) ncvec.org/downloads/2024-2028%20Extra%20Class%20Question%20Pool%20and%20Syllabus%20Public%20Release%20with%204th%20Errata%20Feb%204%202026.pdf
A. Impedance along transmission lines
Checked 2026-10-11.
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