Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download RF Toolbox Pro - High frequency for Microwave designers, RF professionals, EMC technicians and HAMs by Marcus Roskosch, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

RF Toolbox Pro - High frequency for Microwave designers, RF professionals, EMC technicians and HAMs

By Marcus Roskosch

Open iTunes to buy and download apps.


Specialized on high frequency electronics for RF professionals, radio amateurs and students.

RF-Toolbox is based on the popular Electronic Toolbox from Marcus Roskosch.

This app contains some of the common tools from Electronic Toolbox but contains a wide range of additional tools, specialized for high frequency electronics, RF professionals, radio amateurs and students.

Currently RF-Toolbox consists of totally 66 tools and like with Electronic Toolbox, there are more to come over the time.


■ PCB Trace Width (Internal and external Traces)
■ PCB Trace Resistance
■ PCB Trace Impedance (various trace types e.g. Microstrip, embedded Microstrip, Symetric and Asymetric Stripline, Wire Microchip, Wire Stripline, Edge Coupled Microstrip and Stripline)
PCB Crosstalk (Microstrip and Stripline)
■ LC L/T/Pi Match calculation
■ Coax Cable calculation (Standard and individual Types)
■ Amplifier and Attenuator cascade calculation
■ SWR / Reflection / Return loss conversion
■ Power Divider (Branchline, Ratrace and Wilkinson)
■ Capacitor Plate calculation
■ RLC Parallel, Series and Circuit calculation
■ Noise Figure conversion
■ Skin Depth calculation (various materials from Aluminum to Silver)
■ Butterworth Filter (also with plot of filter chart)
■ Chebyshev Filter (also with plot of filter chart)
■ R-C, L-C, R-L High/Low/Band-Pass Filter
■ RF Units conversion (quick conversion of frequently used units)
■ Air coil inductance calculation
■ Resistors, Capacitors, Inductors in Parallel / Series
And there is much more...
■ Aktive Filter calculation tool
■ Antenna calculation tool
■ Delta Star calculation
■ Cable length / ampacity tool
■ PTC / NTC Temperature Resistance conversion
■ AC Ohms law tool
■ Zener diode circuit calculation
■ Constant current source tool
■ ASCII Table
■ Desktop calculator
■ Resistor/Capacitor/Inductor combinations tool
■ 4-20mA conversion tool ■ Passive cooling calculator

■ Audio Oscilloscope

Please check out more screen shots on my website (WEBSITE Link on the left side).

If you have questions, please feel free to contact me by using the Support button here or on my website.

Thank you!

Marcus Roskosch

What's New in Version 9.3.1

This version contains new tools, many improvements under the hood and of course some bug fixes.

New tools in RF-Toolbox:

■ Transmission line – To calculate R',L',C' and Z0 of Twin Line, Coax, Twinstrip and Microstrip transmissionlines
■ Wilkinson Splitter Tool


■ The Packages tool has been further improved
■ Optimizations for the iPad Pro (both models)
■ Necessarily changes for iOS 9.3.x

Thank you all for your great support!

Please don't forget to rate this App.

Thank you,

Best regards,



iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4
iPhone Screenshot 5
iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4
iPad Screenshot 5

Customer Reviews

Fantastic general reference for electronics

I am hamradio operator and I find this app to be a fantastic source for a host of thing for reference, circuit design, circuit simulation, etc. It just keeps getting better.

RF Toolbox Pro - High frequency for Microwave designers, RF professionals, EMC technicians and HAMs
View in iTunes
This app is designed for both iPhone and iPad
  • $5.99
  • Category: Productivity
  • Updated:
  • Version: 9.3.1
  • Size: 74.9 MB
  • Languages: English, French, German, Italian, Russian, Simplified Chinese, Spanish, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
All Versions: