Transmission Line Calc
Black Cat Systems
About this app
- Category Lifestyle
- Age 10
- Updated Jun 5, 2022
- OS IOS
Editor reviews
Transmission Line Calc is a fast, practical transmission line calculator for RF, microwave, and ham radio work. It helps you analyze coax and other lines, estimate key parameters, and optimize antenna feeds with clear, engineering-grade outputs. Ideal for hobbyists, students, and professionals who need quick, accurate results on the go.
Core features
- Compute characteristic impedance, reflection coefficient, VSWR, and return loss from basic line inputs.
- Convert between physical length and electrical length; get wavelength, phase velocity, and propagation delay at any frequency.
- Reference-friendly workflow with common line presets and editable dielectric and velocity factor values.
Why it stands out
- Accurate and fast calculations with a clean, no-frills interface.
- Optimized for field use by RF engineers, ham operators, and antenna tuners.
- SEO keywords: transmission line calculator, RF tools, coax impedance, antenna tuning, SWR meter alternative, microwave engineering, ham radio utility.
Screenshots
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How to use:
1. Download and open the app, then choose preferred units for length and frequency in Settings.
2. Select a line type or enter your own parameters such as frequency, length, impedance target, dielectric constant, and velocity factor.
3. Tap Calculate to view characteristic impedance, reflection coefficient, VSWR, return loss, wavelength, and electrical length.
4. Adjust frequency or length sliders to see real-time updates and understand how each parameter affects SWR and matching.
5. Use presets or create custom profiles for different cables or substrates to speed up repeated calculations.
6. Open Settings to switch units, edit defaults, and fine-tune precision for engineering or field work.