ARDF Transmitter with RFID Registration

German version

Final Year Thesis at The Secondary College HTL Anichstraße for Electronics and Computer Engineering

The aim of this project is the development of a universal, practicable ARDF transmitter for the Austrian Amateur Radio Association (ÖVSV). The concept is based on the diploma project “ARDF Duoband Transmitter” by Simon Außerlechner, Clemens Moroder and Gerald Renner at HTL Anichstraße from 2006, with the design revised and partly extended with new functionalities. The ARDF transmitter is able to transmit automatically both in the 80m- and in the 2m HAM frequency band. Aditionally, a SWR meter makes the process of tuning the antennas easier when placing and installing the transmitters in the terrain. Registration of the participants during the competition is accomplished via RFID-tags in conjunction with an integrated RFID-reader. The configuration of the transmitter prior to the event as well as the analysis of the competitor's data afterwards is carried out digitally via a PC interface. The elaborated hard- and software design is tested on a prototype, where it is found that most of the requirements are met. In some places, possibilities for future improvements and further development are shown.

The project was done by Josef Heel and Simon Kaufmann as a final year project for their Electronics and Computer Engineering High School Diploma at HTL Anichstraße in Innsbruck, Austria. Documentation, schematics, PCB layouts and source code are published on this web page.

Version 1.01 Microcontroller Software and PC Software:
Download PC Software V1.01 (Exe-File)
Download PC Software V1.01 (Source-Code)
Download Microcontroller Software V1.01 (Source-Code + Hex-File)

Version submitted as final thesis (handed in on 8th April 2016):
Download Thesis (PDF, German)
Download Additional Files (CD content, ZIP)


PCB for DDS:

PCB for Microcontroller:


PCB for directional coupler:

PC Software: