Abstract:
This amateur radio project was the most rewarding project I built recently and it is based upon the OpenWebRX+ Linux project found on github (https://luarvique.github.io/ppa/). This is a web-based SDR, which consists of a RF.server, which sends I/Q sampled data, at a typical 2,4 Mb rate (USB limits), via a TCP/IP connection to any HTML5 browser. The browser user-agent can be anywhere in the world that an internet connection can be had as long as you have an open port you can define on your router to pass through to your RF server.
This project evolved into four phases – first phase installing the code on an i5 multicore Ubuntu-based laptop. and configuring the system for a $30 V3 SDR hardware dongle, Second phase was to add an improved hardware SDR, one with tracking RF bandpass filters, larger sampling instead of an 8-bit width to a 12-bit ADC which gives improved RF dynamic range overload protection when the Airspy HF+ Discovery hardware SDR was added. Third phase was to move the RF server code to a Ras Pi 3. While this worked well for 1-2 online users, it was nowhere near the 15-20 simultaneous internet users I obtained with an i5 processor. The fourth phase was the port to a tiny, and very cute, Ras Pi Zero 2W. To give you some idea how cute, the optional metal housing comes with a lanyard so you can wear it around your neck!. Architecturally, the Zero Pi 2W, with its 4-cores, is software compatible to the Pi 3. All 4 phases will be shown during the presentation and the installation, configuration. and the detailed operational manual may be found at https://fms.komkon.org/OWRX/
Bio:
The speaker, Joe Jesson, W2JEJ, co-founded & was CTO of a General Electric business, Asset Intelligence, a GE business which designed and sold remote IoT smart sensors for the logistics and energy sectors. Joe is currently CEO of RF Sigint Group and has over 25+ years of engineering and management experience. Masters degree from DePaul University & working on a PhD.
NOTE: THIS IS A TCF 2025 EVENT PRESENTATION –
YOU MUST PURCHASE A TICKET IN ADVANCE FOR THE TCF 2025 CONFERENCE ==> https://tcf-nj.org/
Room: 113, Bldg: Educational , The College of New Jersey, 2000 Pennington Rd, Ewing, New Jersey, New Jersey, United States, 08618
