Transmission Line Calc is no longer on the App Store. It had too few ratings to say what users thought.
Transmission Line Calc is made and published by
Black Cat Systems.
AppBrain is an independent app data site and isn't affiliated with Black Cat Systems.
The app name, icon, screenshots and description belong to Black Cat Systems and are shown as
published on the App Store.
About Transmission Line Calc
Transmission Line Calc was a reference app developed by Black Cat Systems. It was removed from the App Store May 27, 2026.
User Ratings
Transmission Line Calc was rated 4.30 out of 5 stars, based on 10 ratings.
App Information
Transmission Line Calc cost $2.99. The app size was 2.64 MB. The last available version was 2.0. The last update was on June 5, 2022.
Technical Requirements
The app had a content rating of Everyone. The app had been available on the App Store since before 2010.
Description by Black Cat Systems(from the App Store)
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
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
