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Transmission Line Calc

Transmission Line Calc

RF transmission line calc

8 ratings
8 reviews
🌟 Lifestyle
🔍 Reference

Archived App (Last seen on 1 Jun 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • January 22, 2009
  • June 5, 2022

Features

Developer

Black Cat Systems
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About

Calculate RF transmission line parameters like impedance, attenuation, and SWR. Supports over 50 cable types, allowing input of length, frequency, and power to determine output.

✓Calculate characteristic impedance and velocity factor
✓Determine attenuation and electrical length
✓Calculate impedance at the other end
✓Compute SWR and loss due to SWR
✓Calculate net power out
✓Supports over 50 transmission line types
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What's New in Transmission Line Calc

2.0

June 5, 2022

Updates for new iOS versions.

User reviews

Most RecentHighest RatedLowest Rated

Handy RF Tool

I use Transmission Line Calc frequently to estimate the insertion loss of an RF cable. If I can perform a measurement of the cable’s insertion loss with an RF analyzer, having this app gives me confidence that the measurement was good when the calculated loss and the measured loss are within a dB. The app has a nice selection of coaxial cables to choose.
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AK3NAK3N

David, Technical Support Engineer

I use the LineCalc app more often than any other technical app. I have worked in RF communications for over 40 years and I use this app almost daily. Highly recommended for the RF field engineer and amateur radio (ham) operator.
Zegrec42Zegrec42

Broken on my iPhone X

Have been trying to use app for first time on iPhone X. Cut constantly crashes after parameters are changed. Very painful...
llbrullbru

Great app !

Very handy and useful.
sportsfan738sportsfan738

Make better choices in antenna design

Antenna system designs need the insight provided by this tool along with an antenna analyzer. These two tools have made a great improvement in my antenna building & transmission line selections, since choices are not only from recommendations of others. Antenna tuning is satisfying with the easy results provided by this app.

VE9BP
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12365.12365.
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FAQ

What calculations can Transmission Line Calc perform?

Transmission Line Calc can calculate characteristic impedance, velocity factor, attenuation, electrical length, SWR, and net power out for RF transmission lines.

How many transmission line types does Transmission Line Calc support?

Transmission Line Calc supports over 50 different transmission line types, including various Belden, Davis RF, TMS, and Andrew Heliax cables, as well as generic and rigid lines.

What information do I need to input into Transmission Line Calc?

You need to specify the transmission line type, its length, and the operating frequency. You can also input impedance and input power for more detailed calculations.

Is Transmission Line Calc available on Android?

Transmission Line Calc is currently available for iOS devices, including iPhone, iPad, and iPod.

How often is Transmission Line Calc updated?

The app was last updated on June 5, 2022, with version 2.0 being the latest release.

What is the price of Transmission Line Calc?

Transmission Line Calc is a paid application, priced at $2.99.

Does Transmission Line Calc have ads?

No, Transmission Line Calc is ad-free, providing an uninterrupted user experience.

What is the age rating for Transmission Line Calc?

Transmission Line Calc has an age rating of 4+, making it suitable for a wide range of users.