BPSK31 and 3D waterfall diagram in OpenWebRX

Today I’m happy to announce a new version of OpenWebRX with a BPSK31 demodulator built-in. On the video below, I’m using OpenWebRX with a HackRF to monitor the 20m band and demodulate a BPSK31 QSO:

OpenWebRX now also has a 3D waterfall diagram, featured in the video below, which in addition also shows how the secondary waterfall diagram of the BPSK31 demodulator can be zoomed by moving the filter edges around:

I’m also happy to say I’ve just graduated from university, earning a Master’s degree in electronic engineering. I’m now looking for new opportunities related to Software Defined Radio. I am also thinking about continuing my studies in this field for PhD degree.

My Master’s thesis about “Integrating digital demodulators into OpenWebRX” can be downloaded here. It covers:

  • how CSDR can be used to demodulate BPSK31, BPSK63 and RTTY from the command line, and also to derive new digital modes from existing ones by changing the commands,
  • how CSDR can be used as a general purpose FSK/PSK demodulator, demonstrated with decoding FSK signals sent by a YARD Stick One.

On 15 July, I’m going to have a talk about these topics at SDRA-2017, a conference organized at HAMRADIO Friedrichshafen.

I also have good news about SDR.hu: the server has been moved to a DigitalOcean VPS for better reliability.

I’d like to say thanks to everyone who uses OpenWebRX and CSDR, and also everyone who helped me with this project:

  • Starting from last February, a lot of people donated to support OpenWebRX development.
  • Mike Ossmann from Great Scott Gadgets donated a HackRF and a YARD Stick One that I used for development and testing while implementing digital mode support.
  • My supervisor, Dr. Péter Horváth taught me a lot about digital signal processing, and he always knew where should I look after the hard to understand topics that I encountered.

Thank you everyone for your support!