Smith Chart Touch vs Ham Learning

Smith Chart Touch is the essential Smith chart tool for RF and microwave engineers, students, and hobbyists. Design and analyze impedance matching networks interactively — directly on your device. Build your circuit by adding components one by one and watch the matching path update on the Smith chart in real time. Tap any component to edit its value, drag on the chart to tune it visually, or type exact numbers — the chart and inputs stay in sync at all times. Circuit Components: Series resistor, inductor, and capacitor Parallel resistor, inductor, and capacitor Transmission line (length in wavelengths) Open and short stub (parallel) Smith Chart Modes: Impedance (Z) chart Admittance (Y) chart Immittance (ZY) combined chart Key Features: Fully interactive: drag on the chart or type values — both update each other instantly Multiple projects with custom names and colors per circuit path Example circuits included to get started quickly Clean, dark UI optimized for readability Who is it for? Smith Chart Touch is built for electrical engineers working with RF circuits, antenna design, amplifier matching, and transmission line theory. It is also a great learning companion for students studying microwave engineering.

Ham Learning is a complete, offline-first study companion for amateur radio — from your first Technician ticket all the way to Extra, plus real Morse-code training and live shortwave listening. STUDY FOR YOUR LICENSE • Full US FCC question pools — Technician, General, and Extra (1,400+ questions). • Mock exams with scoring, full question review, and a progress dashboard (study streak, exams attempted, pass rate, per-subelement mastery). • Hundreds of plain-English lessons on operating, rules, electronics, and safety. • Interactive Q-codes, phonetic alphabet, glossary, and a tiered band chart. MASTER MORSE CODE • Koch-method trainer with adjustable Farnsworth spacing, character speed, and tone. • Real-time on-device Morse decoder — point it at received CW and read the text. • Send-it-yourself paddle with a tap-key decoder and live pulse-ring feedback. LISTEN LIVE • Curated WebSDR receivers from around the world. • Built-in SWL logbook — frequency and mode auto-filled from the live receiver, plus callsign, RST, and notes; export the whole log as CSV. CALCULATORS & LABS • Wavelength, dipole/vertical length, Ohm's law, dB, SWR, LC resonance, coax loss, RF-exposure, and Maidenhead grid tools. • Interactive circuit lab and antenna-pattern lab. BUILT RIGHT • Offline-first — works without a connection and degrades gracefully. • No account. No ads. No tracking. • Light/dark themes and adjustable font size. 73 and good luck on your exam — de A41UX.