Thank you so much for visiting with us at QSO Today Ham Expo! We hope you found it as enjoyable, vibrant, and inspiring as we did.
We presented five talks, had three project exhibits, and a booth. You can find a summary below.
Your interest in our work is appreciated. We want you to enjoy open source non-profit digital radio and amateur radio to the fullest. How can we help?
Here is how to get involved with what we do:
Here’s a roundup of what we brought to Ham Expo. All of what we do is published as it is created. Our work is free to the general public at no cost.
Ribbit, a new digital text messaging mode for UHF/VHF emergency communications
Presentors: Pierre Deliou W4CKX, Ahmet Inan
Level: General Audience Category: Emergency Communications Time:
PDT: September 18, 2022, 10:00 am UTC: September 18, 2022, 5:00 pm
Ribbit is a novel digital text messaging mode for VHF/UHF communications for recreational and emergency use which radically increases the density of information transmitted by spectrum used. It leverages the computing power of the modern smartphone to increase the capabilities of any Handy Talkie without requiring any additional hardware. Its redundant distributed nature allows it to function even when connectivity to the internet is lost during emergencies. Ribbit is open source and currently in its early stages of development. Get the free Android app here: https://play.google.com/store/apps/details?id=com.aicodix.rattlegram
Artificial Intelligence and Machine Learning and the Future of Amateur Radio
Level: Intermediate Category: DSP and Software Design, Future of Amateur Radio, SDR Software Defined Radio, Software and Services Time:
PDT: September 17, 2022, 1:00 pm UTC: September 17, 2022, 8:00 pm
Artificial Intelligence and Machine Learning are all over the news, taking over academia, getting billions of dollars of commercial investment, and will change both computer networking and wireless communications in fundamental ways. What does the future of amateur radio look like when radios use machine learning to operate? How does our relationship to the bands change with cognitive radio? Where are we in this transformation? What will happen next?A working group to produce an AI/ML Handbook for Amateur Radio is forming now. Register your interest here: https://forms.gle/4dZsLkmyxCkp8JiF6
Truly Excellent Digital Voice Quality: Opulent Voice
Presentors: Paul Williamson KB5MU
Level: General Audience Category: Digital Voice Mode, DSP and Software Design, Software and Satellites, Space and Satellites Time:
PDT: September 17, 2022, 9:00 am UTC: September 17, 2022, 4:00 pm
Digital voice on amateur radio to date has generally had terrible voice quality, due to both a perception of limited available bandwidth and the convenience (to manufacturers) of repurposing commercial protocols with their older, proprietary, low-bitrate voice codecs. We present and demonstrate a modern digital voice design that can be used on 222 MHz and above with truly excellent voice quality. Source code here: https://github.com/phase4ground/opv-cxx-demod
Haifuraiya – Open Source HEO Satellite Project Proposal
Presentors: Michelle Thompson W5NYV
Level: General Audience Category: Space and Satellites Time:
PDT: September 18, 2022, 9:00 am UTC: September 18, 2022, 4:00 pm
Haifuraiya is an open source highly elliptical orbit amateur satellite project proposal. This presentation will walk through the high-level project proposal. The project features a digital microwave multiplexing transceiver with a failover transponder mode, has an international volunteer team open to community participants, and complies with debris mitigation guidance from the United States Federal Communications Commission. Repository here: https://github.com/phase4ground/documents/blob/master/Papers_Articles_Presentations/Slide_Presentations/haifuraiya/README.md
User Authentication for Amateur Satellites
Presentors: Paul Williamson KB5MU
Level: General Audience Category: DSP and Software Design, Software and Satellites, Space and Satellites Time:
PDT: September 17, 2022, 8:00 am UTC: September 17, 2022, 3:00 pm
After a brief discussion of the reasons why user authentication is needed on an amateur satellite service system, we’ll cover a proposed system to implement reasonably secure user authentication on a P4XT digital multiplexing satellite transponder, within the bounds of the (United States) rules.
We had three project showcases in the Project Gallery
Each Gallery had a Q&A tab, a poster or document, links to any papers, and a link to any associated video presentations.
1) Ribbit, a distributed digital messaging platform
2) Opulent Voice – High Bitrate Digital Voice and Data
3) Open Source Satellite Work is Free of ITAR/EAR
Thank you to Ham Expo for providing fun and effective Lounges for interaction at the conference. We truly enjoyed visiting with everyone that dropped by! We hope you enjoyed our themed events and the extended Q&A in the Lounges.