Legal Information and Notice

German "Impressum" here

Website Responsibility

softsyst GmbH
Triebstrasse 41
D-60388 Frankfurt am Main

P +49 (0)6109 609 877 7
F +49 (0)6109 609 877 8
M +49 (0)170 182 628 0


Dr.rer.nat. Clemens Schmidt

Commercial Registries
Amtsgericht Frankfurt am Main
HRB 101192



The contents of this website have been prepared with the highest possible diligence. However, softsyst GmbH will not be liable for any possible losses or damages using this website or in connection with the use of this website.

softsyst GmbH is not responsible for the content of external, linked websites. The sole responsibility for those contents lies with the maintainers of those websites.


All contents of this website may only be used with expressed written consent of softsyst GmbH. In particular, this includes the presentation and circulation in the internet.

Origins and authors of pictures from external sources are copied into the respective pictures and are liable to their respective copyrights. Pictures without authors are owned by softsyst GmbH and are liable to this websites' copyright notice. Logos are liable to the copyrights of their respective owners. The Visual Studio 2013 logo has been adapted from cronoxyd. The Linux "Tux" logo has been adapted from Wikipedia and is copyright by Larry Ewing and The GIMP.


The use of our quizzes presented on this website is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License. This comprises the following parts:

  • Quiz Contents, i.e. the questions and the answers
  • Quiz layout, i.e. the presentation of the whole quiz workflow on this website
  • Quiz workflow
This license only allows private, non-commercial use of the work. Please contact us in case you are interested in a commercial utilisation.


The QIRX SDR is provided for download on this website under our License Agrement. The granted rights are for non-commercial use of the software only. The license agreement can be read here. The use of QIRX may be subject to legal restrictions, differing from country to country. The user is responsible for the legal use of QIRX. Under no circumstances softsyst GmbH or Dr.Clemens Schmidt are responsible for possible violations of the law by the use of of QIRX. By downloading QIRX you agree to these conditions.

QIRX License Agreement

May 2019


"Software" signifies the QIRX Application qirx.exe with its accompanying files, the Dynamic Link Library (DLL) dabTII.dll and the database file qirxDAB.xlsx, in both the form of a compressed "zip" file as offered for download on our website, and in their unpacked form.

"You" shall mean an individual or Legal Entity exercising permissions granted by this License.

The Software you are about to install, run and/or use is licensed by softsyst GmbH ("softsyst"), a company registered in Germany, and Clem Schmidt. For the registration details, see the "Legal Info" on the website softsyst and Clem Schmidt are the copyright holders of the Software.

"We" shall mean softsyst and Clem Schmidt.

We hereby grant you the right to use the Software under the following conditions:

1. Non-commercial

You may use the Software for your personal, non-commercial purposes only. A commercial use is possible under a different license. Please contact us in case you are interested.

2. Environment

You may use the accompanying DLL only in cooperation with the QIRX Software Defined Radio, as distributed on the softsyst website.

3. Redistribution

You may NOT: reproduce the Software for re-distribution in any medium..

4. Restrictions

You may NOT: modify, disassemble, decompile or reverse engineer the Software.

5. Other

No implied conditions, warranties or other terms, including any implied terms relating to satisfactory quality or fitness for any purpose, will apply to the Software.

You may use the Software entirely at your own risk. Under no circumstances shall we be made liable for any damages or losses caused by the use of the Software.

If any part of this License Agreement shall be found unlawful it shall not affect the validity or enforceability of the remainder of any of the other provisions thereof.

Privacy Policy

Your login information is neither forwarded, sold nor used in any other way than to provide you with the history of using this website, in particular to provide you with the results of previous quiz attempts. When logged-in, you agree that your login information is stored on our webserver, and might be connected to your actions on this site.

When downloading content from our website your IP-Address is stored on our server in an anonymized form. This information is for internal statistical reasons only and not forwarded to third parties. By downloading you agree to this condition.

This website uses analytical software ("Google Analytics") to enable us to analyse the use of our website. This generates data which are stored on our server and are possibly forwarded to Google. Your IP-Address is stored in an anonymized form. The data are used for our own statistical purposes, in order to improve the services on our website. By using our services you agree to this condition.

In case you do not agree to the storage and evaluation of the data mentioned in the last paragraph, you can opt-out by clicking here.

Please note that in case you delete the Cookies in your browser, you have to "opt-out" again.

  • Cookies help us deliver our services. By using our services, you agree to our use of cookies. Learn more