Transmission Line Calc

Name: Transmission Line Calc
Price: 2.99 USD
Rating: 4.3 (10 reviews)
Author: Black Cat Systems

By: Black Cat Systems

RF transmission line calc

This app was removed from Apple Apps Store on 2026-05-28

Features & Capabilities

Transmission Line Calc allows you to perform several calculations related to RF transmission lines.

After selecting from one of 53 different transmission lines, you specify the length and operating frequency. The characteristic impedance and velocity factor of the cable is displayed, and the attenuation (loss) as well as electrical length (in wavelengths and degrees) is displayed.

Next, you can specify the impedance (both resistive and reactive) and whether this is measured at the input to the transmission line or the load. The impedance at the other end of the transmission line is calculated, as well as the SWR (Standing Wave Ratio) for both ends.

The loss due to the SWR is then calculated and displayed, as well as the total loss.

Next, you can enter in the input power, the loss due to the cable as well as SWR is displayed, and the net power out.

Supported cable types: Belden 8215 (RG-6A) Belden 8237 (RG-8) Belden 9913 (RG-8) Belden 9258 (RG-8X) Belden 8213 (RG-11) Belden 8261 (RG-11A) Belden 8240 (RG-58) Belden 9201 (RG-58) Belden 8219 (RG-58A) Belden 8259 (RG-58C) Belden 8212 (RG-59) Belden 8263 (RG-59B) Belden 9269 (RG-62A) Belden 83241 (RG-141A) Belden 8216 (RG-174) Belden 8267 (RG-213) Davis RF Bury-Flex TMS LMR-100A TMS LMR-200 TMS LMR-240 TMS LMR-400 TMS LMR-600 TMS LMR-900 300 ohm Tubular 450 ohm Window 600 ohm Open Andrew Heliax LDF4-50A Andrew Heliax LDF5-50A Andrew Heliax LDF6-50A Generic 300 ohm Tubular Generic 450 ohm Window Generic 600 ohm Open CommScope 6 Series Plenum CommScope 11 Series Plenum CommScope 59 Series Plenum CommScope 6 Series Drop CommScope 11 Series Drop CommScope QR 320 Drop CommScope 59 Series Drop Aircell 5 Aircell 7 Aircom Plus Ecoflex 10 Standard Ecoflex 10 Plus Ecoflex 15 Standard Ecoflex 15 Plus Ecoflex 10 Plus HTX MACX350A 3-1/8" Rigid Line MACX450A 4-1/16" Rigid Line MACX650A 6-1/8" Rigid Line MACX775A 7-3/16" Rigid Line MACX850A 8-3/16" Rigid Line

User Growth & Download Statistics

App

By:

Black Cat Systems

Rating:

4.30

(10)

Version:

2.0 Last updated: 2022-06-05

Version code:

849431913

Creation date:

2009-01-22

Compatible devices:

Size:

2.64MB

Price:

2.99

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-05-28

Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Black Cat Systems

Apple Apps Store

https://apps.apple.com/us/app/transmission-line-calc/id302734281

Website:

http://www.blackcatsystems.com/iphone/transmission_line_calc.html

User Reviews

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.

by AK*****, 2026-02-28

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.