@proceedings {948,
	title = {The Whistler Catcher Thin: An Advanced VLF Reception System Based on the Whistler Catcher Pi},
	year = {2025},
	month = {03/2025},
	publisher = {HamSCI},
	address = {Newark, NJ},
	abstract = {<p>The Whistler Catcher Pi is a VLF Reception System that captures the VLF spectrum up to 48 kHz using a VLF Active Antenna, Audio Injector Stereo soundcard, GNSS receiver, and a Raspberry Pi running vlfrx-tools software. The system has the ability to capture science-grade VLF data using common off the shelf components. It can timestamp with GNSS accuracy, remove mains hum, automatically capture natural radio events like dawn chorus and whistlers, automatically record amplitude and absolute phase of Navy VLF transmitters to detect SIDs and GRBs, calculate the Time of Group Arrival of sferics, record EbNaut transmissions from VLF amateurs, and many more. It was installed in December 2021 and is still in continuous operation, having captured over 100 whistlers, detected hundreds of SIDs, and an EbNaut transmission at 8.270 kHz from DL3JMM in Germany. Having built on this success, we propose the Whistler Catcher Thin, a VLF reception system that can capture spectrum up to 96 kHz utilizing the same VLF Active Antenna, Behringer UMC202HD USB Audio Interface, and Dell Wyze 5070 Thin Client. The added processing power and higher sample rate from these low cost components lend well to a low cost network of these VLF reception systems for DASI2, adding observations to simultaneous HF and magnetometer observations. With a network of at least six systems, the HamSCI lightning location network can be realized.</p>
},
	author = {Jonathan Rizzo}
}
@proceedings {718,
	title = {W2NAF-KC3EEY VLF Observatory - A Year of Operation},
	year = {2023},
	month = {03/2023},
	publisher = {HamSCI},
	address = {Scranton, PA},
	abstract = {<p>After a year of operation, the W2NAF-KC3EEY VLF Observatory has detected thousands of sferics and tweeks, over fourty whistler events, two major dawn chorus events, two SAQ transmissions, and the first ever Amateur VLF transmissions from Radio Ameteur DL3JMM at 8270.03Hz using the EbNaut digital mode. This demonstrates that a simple VLF receiver with powerful signal processing from vlfrx-tools software using a Raspberry Pi, soundcard, and GPS receiver can serve both the VLF professional and amateur community. Using this, it{\textquoteright}s possible to construct a network of VLF receivers and perform signal processing from multiple locations for applications such as lightning location and location of other natural radio signals, sferic analysis, natural radio event study in multiple locations, interferometry of Amateur VLF transmissions, and more.</p>
},
	author = {Jonathan Rizzo}
}
@proceedings {494,
	title = {W3USR and The Great Collegiate Shortwave Listening Contest},
	year = {2021},
	month = {03/2021},
	publisher = {HamSCI},
	address = {Scranton, PA (Virtual)},
	url = {https://hamsci2021-uscranton.ipostersessions.com/Default.aspx?s=1B-12-5C-9B-5C-AF-F5-8B-AC-62-CD-DD-D5-51-6A-9A},
	author = {M. Shaaf Sarwar and Veronica I. Romanek and Thomas Baran and Jonathan Rizzo and Steve Holguin and Jonathan Rizzo and Nathaniel A. Frissell and William Liles and Kristina Collins and David Kazdan}
}
