@proceedings {1047,
	title = {Remembering and Honoring Paul Nicholson G8LMD: Passionate VLF Enthusiast and Master},
	year = {2026},
	month = {03/2026},
	publisher = {HamSCI},
	address = {Newington, CT},
	abstract = {Jonathan Rizzo KC3EEY, HamSCI VLF project lead, remembers and honors Paul Nicholson G8LMD, a passionate VLF enthusiast, engineer, software author, amateur radio operator, and all around curious, intelligent, kind, helpful, and wonderful person and husband. The HamSCI VLF project is only possible because of Paul{\textquoteright}s innumerous contributions. Jonathan followed Paul{\textquoteright}s projects very closely since 2013 and considers him his VLF "Elmer". To Jonathan, Paul was a rock star. Not only does Jonathan remember and honor Paul, but he also intends to continue Paul{\textquoteright}s amazing work through deploying a network of HamSCI Whistler Catcher VLF Reception Systems. These systems will make observations of VLF phenomena, QSOs with VLF amateur transmissions, and lightning stroke locations solutions for the HamSCI Lightning Detection Network and the Indian Lightning Detection Network (ILDN). The ILDN was a project close to Paul{\textquoteright}s heart. Paul became a silent key on 12 August 2025 after a courageous battle with cancer that he approached with stoicism and strength. The HamSCI Whistler Catcher VLF Reception System is dedicated to Paul{\textquoteright}s memory and honor.},
	author = {Jonathan D. Rizzo}
}
@proceedings {819,
	title = {The W2NAF-KC3EEY VLF Observatory: Building Exciting New Developments from a Solid Foundation},
	year = {2024},
	month = {03/2024},
	publisher = {HamSCI},
	address = {Cleveland, OH},
	abstract = {<p>After more than two years, the VLF reception system installed at the W2NAF-KC3EEY VLF Observatory in Spring Brook Township, PA has proven an essential tool in ionospheric and magnetospheric research. Using low cost and simplistic hardware like a VLF Active Antenna, Raspberry Pi, soundcard, and GNSS receiver along with powerful, open-source software such as vlfrx-tools and GPS Daemon, it is possible to capture VLF spectrum data with science-grade accuracy, precision, and reliability that an amateur can easily achieve. Building on this foundation, new developments were made possible which include a 3-channel VLF reception system of the same hardware and software architecture; an H-field VLF receiver that will be used alongside the Active VLF Antenna as well as the newly developed 3-channel VLF reception system to enable triple axis reception, an amateur VLF transmission rig utilizing a GPS-locked carrier and the EbNaut digital mode, a possible atmospheric gravity wave detection from the Tonga eruption, an exciting 2023 annular eclipse observation indicating both influence from the Moon{\textquoteright}s shadow and a solar flare using Naval VLF transmitters and lightning sferics, and an analysis of the observed dusk and dawn phenomena on Naval VLF signals, along with other developments. These developments coincide with a call to establish the HamSCI VLF Network, a network of worldwide VLF reception systems installed and operated by volunteers, amateurs, and professionals alike in radio-quiet locations. The HamSCI VLF Network will augment the existing HamSCI Grape experiment with D/E-layer ionospheric phenomena, lightning location data with accurate stroke solutions, and more.\&nbsp;\&nbsp;</p>
},
	author = {Jonathan D. Rizzo and Nathaniel A. Frissell}
}
@article {667,
	title = {Amateur Radio: An Integral Tool for Atmospheric, Ionospheric, and Space Physics Research and Operations},
	journal = {White Paper Submitted to the National Academy of Sciences Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033},
	year = {2022},
	doi = {10.3847/25c2cfeb.18632d86},
	author = {Nathaniel A. Frissell and Laura Brandt and Stephen A. Cerwin and Kristina V. Collins and David Kazdan and John Gibbons and William D. Engelke and Rachel M. Frissell and Robert B. Gerzoff and Stephen R. Kaeppler and Vincent Ledvina and William Liles and Michael Lombardi and Elizabeth MacDonald and Francesca Di Mare and Ethan S. Miller and Gareth W. Perry and Jonathan D. Rizzo and Diego F. Sanchez and H. Lawrence Serra and H. Ward Silver and David R. Themens and Mary Lou West}
}
@article {670,
	title = {Fostering Collaborations with the Amateur Radio Community},
	journal = {White Paper Submitted to the National Academy of Sciences Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033},
	year = {2022},
	doi = {10.3847/25c2cfeb.09fe22b4},
	author = {Nathaniel A. Frissell and Laura Brandt and Stephen A. Cerwin and Kristina V. Collins and Timothy J. Duffy and David Kazdan and John Gibbons and William D. Engelke and Rachel M. Frissell and Robert B. Gerzoff and Stephen R. Kaeppler and Vincent Ledvina and William Liles and Elizabeth MacDonald and Gareth W. Perry and Jonathan D. Rizzo and Diego F. Sanchez and H. Lawrence Serra and H. Ward Silver and Tamitha Mulligan Skov and Mary Lou West}
}
@conference {544,
	title = {HamSCI Personal Space Weather: Architecture and Applications to Radio Astronomy},
	booktitle = {Annual (Summer) Eastern Conference},
	year = {2021},
	month = {07/2021},
	publisher = {Society of Amateur Radio Astronomers (SARA)},
	organization = {Society of Amateur Radio Astronomers (SARA)},
	address = {Virtual},
	abstract = {<p>The Ham Radio Science Citizen Investigation (HamSCI) Personal Space Weather Station (PSWS) project is a citizen science initiative to develop a new modular set of ground-based instrumentation for the purpose of studying the structure and dynamics of the terrestrial ionosphere, as well as the larger, coupled geospace system. PSWS system instrumentation includes radio receivers sensitive to frequencies ranging from the very low frequency (VLF) through very high frequency (VHF) bands, a Global Navigation Satellite System (GNSS) receiver to provide Total Electron Content (TEC) measurements and serve as a precision time and frequency reference, and a ground magnetometer sensitive to ionospheric and geospace currents. Although the PSWS is designed primarily for space weather and space science, its modular and open design in both hardware and software allows for a variety of use cases. The core radio instrument of the PSWS, the TangerineSDR, is a wideband, direct sampling 100~kHz to 60~MHz field programmable gate array (FPGA)-based software defined radio (SDR) receiver with direct applicability to radio astronomy. In this paper, we describe the PSWS and TangerineSDR architecture, show examples of how the TangerineSDR could be used to observe Jovian decametric emission, and discuss the applicability of the TangerineSDR to radio astronomy in general.</p>
},
	url = {https://rasdr.org/store/books/books/journals/proceedings-of-annual-conference},
	author = {Nathaniel A. Frissell and Scott H. Cowling and Thomas C. McDermott and John Ackermann and David Typinski and William D. Engelke and David R. Larsen and David G. McGaw and Hyomin Kim and David M. Witten, II and Julius M. Madey and Kristina V. Collins and John C. Gibbons and David Kazdan and Aidan Montare and Dev Raj Joshi and Veronica I. Romanek and Cuong D. Nguyen and Stephen A. Cerwin and William Liles and Jonathan D. Rizzo and Ethan S. Miller and Juha Vierinen and Philip J. Erickson and Mary Lou West}
}
