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S. A.  Cerwin, McMahan, J. T., Papadopoulos, A. S., Piccini, G. N., Frissell, N. A., Collins, K. V., Montare, A., Bilberry, P., Blackshear, S., and Themens, D. R., ?HamSCI HF multipath propagation mode analysis using amateur radios and audio waveforms sensitive to time difference of arrival?, Frontiers in Astronomy and Space Sciences, vol. 13, 2026.\par \par G.  Zayed, Pandey, K., and Frissell, N., ?HamSCI Link Budget: Observations and Modeling the Signal Strength of HF Radio Links from WWV to W2NAF?, HamSCI Workshop 2026. HamSCI, Newington, CT, 2026.\par \par W.  Engelke, Atkison, T., Hardt, E., Hirschey, C., Ward, G., and Lee, A., ?The Heliophysics Application Programming Interface on the PSWS?, HamSCI Workshop 2026. HamSCI, Newington, CT, 2026.\par \par E.  Moran and Frissell, N., ?HF Doppler Studies of the 2024 Total Solar Eclipse?, HamSCI Workshop 2026. HamSCI, Newington, CT, 2026.\par \par M.  Kuchner, ?How I Almost Went to Jail?, HamSCI. HamSCI, Newington, CT, 2026.\par \par K.  Hozumi and Frissell, N., ?HamSCI as a Tool for Equatorial Plasma Bubbles Study?, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.\par \par D.  Kazdan, Collins, K., and Davydov, L., ?The HamSCI Book Club?, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.\par \par K.  Collins, ?HamSCI in OpenSpace: Toward Unified Visualizations of Geospace Data?, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.\par \par M. K.  Denton, ?HamSCI?s Meteor Scatter QSO Party 2025?, HamSCI Workshop. HamSCI, Newark, NJ, 2025.\par \par K.  Pandey, Perry, G., Frissell, N., Atkinson, T., Engelke, W., Huba, J., West, M. Lou, Gladstone, P., Cushing, C., Denton, M. K., Efchak, E., Mikitin, G., and H. Silver, W., ?HamSCI Solar Eclipse QSO Party (SEQP): Observations and Modeling on  Ionospheric Effects?, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.\par \par G.  Zayed, Frissell, N., and Pandey, K., ?High-Frequency Signal Strength Simulation at GRAPE Personal Space Weather Stations Using PHaRLAP Ray Tracing?, HamSCI Workshop 2025. HamSCI, Newark, NJ, 2025.\par \par R.  Potter, Tormann, N., Zakzewski, C., Mokhtari, M., Frissell, N., Martin, K., McLynch, J., Kim, H., Perry, G., McGaw, D., LaBelle, J., Godfrey, T., Hartje, M., Griffiths, G., Robinett, R., and Elliott, P., ?How Do We Put a HamSCI Personal Space Weather Station in Antarctica??, HamSCI Workshop. HamSCI, Newark, NJ, 2025.\par \par N. A.  Frissell, ?HamSCI 2024 Day 1 Closing Remarks?, HamSCI Workshop 2024. HamSCI, 2024.\par \par N. A.  Frissell, ?HamSCI 2024 Day 1 Welcome and Opening Remarks?, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.\par \par N. A.  Frissell, ?HamSCI 2024 Day 2 Welcome and Opening Remarks?, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.\par \par K.  Zawdie, ?High Frequency Raytracing for Studying the Ionosphere and Radio Propagation (Invited Tutorial)?, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.\par \par R.  Robinett and Elliott, P. M., ?High Resolution WSPR Transmissions for Ionospheric Research?, HamSCI Workshop 2024. 2024.\par \par J.  Alexander, ?The Ham Radio Project: Exploring the Electromagnetic Spectrum (Invited Tutorial)?, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.\par \par N.  Frissell, ?HamSCI 2023 Day 1 Welcome and Opening Remarks?, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.\par \par N. A.  Frissell, ?HamSCI 2023 Day 2 Welcome and Opening Remarks?, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.\par \par R.  Reif, ?HamSCI: Continuing a Long Tradition of Amateur Radio Citizen Science?, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.\par \par G.  Mikitin, ?HamSCI Workshop 2023: A Radio Science Collaboration?, QST, vol. 107, 12 vol., no. 10, pp. 59-61, 2023.\par \par N. A.  Frissell, Ackermann, J. R., Alexander, J. N., Benedict, R. L., Blackwell, W. C., Boedicker, R. K., Cerwin, S. A., Collins, K. V., Cowling, S. H., Deacon, C., Diehl, D. M., Di Mare, F., Duffy, T. J., Edson, L. Brandt, Engelke, W. D., Farmer, J. O., Frissell, R. M., Gerzoff, R. B., Gibbons, J., Griffiths, G., Holm, S., Howell, F. M., Kaeppler, S. R., Kavanagh, G., Kazdan, D., Kim, H., Larsen, D. R., Ledvina, V. E., Liles, W., Lo, S., Lombardi, M. A., MacDonald, E. A., Madey, J., McDermott, T. C., McGaw, D. G., McGwier, R. W., Mikitin, G. A., Miller, E. S., Mitchell, C., Montare, A., Nguyen, C. D., Nordberg, P. N., Perry, G. W., Piccini, G. N., Pozerski, S. W., Reif, R. H., Rizzo, J. D., Robinett, R. S., Romanek, V. I., Sami, S., Sanchez, D. F., Sarwar, M. Shaaf, Schwartz, J. A., H. Serra, L., H. Silver, W., Skov, T. Mulligan, Swartz, D. A., Themens, D. R., Tholley, F. H., West, M. Lou, Wilcox, R. C., Witten, D., Witvliet, B. A., and Yadav, N., ?Heliophysics and amateur radio: citizen science collaborations for atmospheric, ionospheric, and space physics research and operations?, Frontiers in Astronomy and Space Sciences, vol. 10, 2023.\par \par R.  Wilcox, ?History of the Art of DXing and Contesting?, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.\par \par Z.  Shah, Griffiths, G., Robinett, R., and Frissell, N., ?How Do I Talk From Scranton to Pakistan Using? High Frequency Amateur Radio???, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.\par \par C. - P.  Yeang, ?Ham Radio and the Discovery of the Ionosphere (Keynote)?, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.\par \par N. A.  Frissell, ?HamSCI Plans for the Study of the 2023 and 2024 Solar Eclipse Impacts on Radio and the Ionosphere?, Dayton Hamvention. Dayton Amateur Radio Association, Xenia, OH, 2022.\par \par J.  Gibbons, ?Hardware Design of the Grape2 Data Collection Sequencing Engine?, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.\par \par V.  Romanek, Frissell, N. A., Liles, W., Gibbons, J., and Collins, K. V., ?HF Doppler Observations of Traveling Ionospheric Disturbances in a WWV Signal Received with a Network of Low Cost HamSCI Personal Space Weather Stations?, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.\par \par K. V.  Collins, Kazdan, D., and Frissell, N., ?Ham Radio Creates a Planet-Sized Space Weather Sensor Network?, QST, vol. 105, 12 vol., no. 8, pp. 55-58, 2021.\par \par K.  Collins, Kazdan, D., and Frissell, N., ?Ham Radio Forms a Planet-Sized Space Weather Sensor Network?, Eos, vol. 102, 2021.\par \par K. V.  Collins, Frissell, N. A., Erickson, P. J., Brandt, L., MacDonald, E., Black, M., and Perry, G., ?HamSCI Campaign Co-Design (Panel Discussion)?, in HamSCI Workshop 2021, Virtual, 2021.\par \par N. A.  Frissell, Sanchez, D., Perry, G. W., Kaeppler, S. R., Joshi, D. Raj, Engelke, W. D., Thomas, E. G., Coster, A. J., Erickson, P. J., J. Ruohoniemi, M., Baker, J. B. H., and Gerzoff, R., ?HamSCI: Ham Radio Science Citizen Investigation?, ISWAT Meeting. International Space Weather Action Team (ISWAT), Virtual, 2021.\par \par N. A.  Frissell, Cowling, S. H., McDermott, T. C., Ackermann, J., Typinski, D., Engelke, W. D., Larsen, D. R., McGaw, D. G., Kim, H., Witten, II, D. M., Madey, J. M., Collins, K. V., Gibbons, J. C., Kazdan, D., Montare, A., Joshi, D. Raj, Romanek, V. I., Nguyen, C. D., Cerwin, S. A., Liles, W., Rizzo, J. D., Miller, E. S., Vierinen, J., Erickson, P. J., and West, M. Lou, ?HamSCI Personal Space Weather: Architecture and Applications to Radio Astronomy?, in Annual (Summer) Eastern Conference, Virtual, 2021.\par \par N. A.  Frissell, Joshi, D., Romanek, V. I., Collins, K. V., Montare, A., Kazdan, D., Gibbons, J., Engelke, W. D., Atkison, T., Kim, H., Cowling, S. H., McDermott, T. C., Ackermann, J., Witten, D., Madey, J., H. Silver, W., Liles, W., Cerwin, S., Erickson, P. J., Miller, E. S., and Vierinen, J., ?HamSCI Personal Space Weather Station (PSWS): Architecture and Current Status?, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Virtual, 2021.\par \par N. A.  Frissell, Joshi, D. Raj, Collins, K., Aidan, M., Kazdan, D., Engelke, W. D., Atkison, T., Kim, H., Cowling, S. H., McDermott, T. C., Ackermann, J., Witten, D., Madey, J., H. Silver, W., Liles, W., Cerwin, S. A., Erickson, P. J., Miller, E. S., and Vierinen, J., ?HamSCI Personal Space Weather Station (PSWS): Fall 2021 Update?, TAPR-ARRL Digital Communications Conference. ARRL-TAPR, Virtual, 2021.\par \par N. A.  Frissell, ?HamSCI: The Ionosphere from Your Backyard?, AMSAT SA Space Symposium. AMSAT-SA, South Africa (Virtual), 2021.\par \par N. A.  Frissell, ?HamSCI: Today?s Community and Future Directions?, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.\par \par S. H.  Cowling, ?Hardware System Update: Data Engine, RF Module, Clock Module, Magnetometer?, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.\par \par V. I.  Romanek, Frissell, N. A., Joshi, D. Raj, Liles, W., Trop, C. C., Collins, K. V., and Perry, G. W., ?HF Doppler Observations of Traveling Ionospheric Disturbances in a WWV Signal Received with a Network of Low-Cost HamSCI Personal Space Weather Stations?, in Annual (Summer) Eastern Conference, Virtual, 2021.\par \par V. I.  Romanek, Frissell, N. A., Joshi, D. Raj, Liles, W., Trop, C., Collins, K., and Perry, G. W., ?HF Doppler Observations of Traveling Ionospheric Disturbances in the WWV Signal Received with a Network of Low-Cost HamSCI Personal Space Weather Stations?, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.\par \par V. I.  Romanek, Frissell, N. A., Joshi, D. Raj, Liles, W., Trop, C., Collins, K., and Perry, G. W., ?HF Doppler Observations of Traveling Ionospheric Disturbances in the WWV Signal Received with a Network of Low-Cost HamSCI Personal Space Weather Stations?, in American Geophysical Union Fall Meeting, New Orleans, LA, 2021.\par \par V. I.  Romanek, Frissell, N. A., Joshi, D., Liles, W., Trop, C., Collins, K., and Perry, G., ?HF Doppler Observations of Traveling Ionospheric Disturbances in a WWV Signal Received with a Network of Low-Cost HamSCI Personal Space Weather Stations?, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Virtual, 2021.\par \par J. K.  Breakall, ?History of Antenna Technology at the Arecibo Observatory, Arecibo Puerto Rico?, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.\par \par N. A.  Frissell, Joshi, D., Collins, K., Montare, A., Kazdan, D., Gibbons, J., Mandal, S., Engelke, W., Atkison, T., Kim, H., Gerrard, A. J., Vega, J. S., Cowling, S. H., McDermott, T. C., Ackermann, J., Witten, D., Silver, H. W., Liles, W., Cerwin, S., Erickson, P. J., and Miller, E. S., ?HamSCI Distributed Array of Small Instruments Personal Space Weather Station (DASI-PSWS): Architecture and Current Status (Invited)?, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Santa Fe, NM (Virtual), 2020.\par \par N. A.  Frissell, ?HamSCI PSWS Overview and Status?, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2020.\par \par N. A.  Frissell, Erickson, P. J., Miller, E. S., Liles, W., H. Silver, W., R. Luetzelschwab, C., and Skov, T., ?HamSCI: Space Weather Operational Resources and Needs of the Amateur Radio Community?, in American Meteorological Society Annual Meeting, Boston, MA, 2020.\par \par N. A.  Frissell, ?HamSCI ? The Ionosphere from your Backyard?, in HamCation, Orlando, FL, 2020.\par \par S.  Cowling, ?Hands-On-SDR: TangerineSDR?, QEX, pp. 10-15, 2020.\par \par S.  Cerwin, ?HF Propagation Measurement Techniques and Analyses?, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2020.\par \par W.  H. Silver, ?Ham Radio 2.0 - Science, Service, Skill (Keynote Address)?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par C.  R. Luetzelschwab, ?Ham Radio for Space Scientists (Invited Tutorial)?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par F.  Bonte and Bonte, S., ?Hams: The First Makers?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par T. C.  McDermott, ?HamSCI HF Receiver Requirements?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par H.  Kim and Frissell, N. A., ?HamSCI Magnetometer Network for Space Weather Monitoring?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par J. S.  Vega, Frissell, N. A., Erickson, P. J., and Gerrard, A. J., ?HamSCI Personal Space Weather Station: A New Tool for Citizen Science Geospace Research?, in USNC?URSI National Radio Science Meeting, Boulder, CO, 2019.\par \par J.  Ackermann, ?HF Spectrum Playback using Gnuradio (Demonstration)?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par N. A.  Frissell, Vega, J. S., Markowitz, E., Gerrard, A. J., Engelke, W. D., Erickson, P. J., Miller, E. S., R. Luetzelschwab, C., and Bortnik, J., ?High Frequency Communications Response to Solar Activity in September 2017 as Observed by Amateur Radio Networks?, Space Weather, 2019.\par \par N. A.  Frissell, Vega, J. S., Markowitz, E., Gerrard, A. J., Engelke, W. D., Erickson, P. J., Miller, E. S., R. Luetzelschwab, C., and Bortnik, J., ?High Frequency Communications Response to Solar Activity in September 2017 as Observed by Amateur Radio Networks?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par J.  Galm, ?History of Case ARC and W8EDU?, in HamSCI Workshop 2019, Cleveland, OH, 2019.\par \par V.  Androsov and Thompson, R., ?How Real-Time Scoreboards Change Contesting?, in Dayton Hamvention, Xenia, OH, 2019.\par \par N. A.  Frissell, Vega, J. S., Markowitz, E., Gerrard, A. J., Engelke, W. D., Erickson, P. J., Miller, E. S., R. Luetzelschwab, C., and Bortnik, J., ?High Frequency Communications Response to Solar Activity in September 2017 as Observed by Amateur Radio Networks?, in Fall AGU, Washington, DC, 2018.\par \par N. A.  Frissell, Katz, J. D., Gunning, S. W., Vega, J. S., Gerrard, A. J., Moses, M. L., Earle, G. D., West, M. L., Erickson, P. J., Miller, E. S., Gerzoff, R., and H. Silver, W., ?HamSCI and the 2017 Total Solar Eclipse?, in American Geophysical Union Fall Meeting, New Orleans, LA, 2017.\par \par N. A.  Frissell, Katz, J. D., Gunning, S. W., Vega, J. S., West, M. L., Earle, G. D., Moses, M. L., and Silver, H. W., ?HamSCI and the 2017 Total Solar Eclipse?, in 2017 Annual Meeting of the APS Mid-Atlantic Section, Newark, NJ, 2017.\par \par N. A.  Frissell, Engelke, W., Katz, J. D., and Vega, J. S., ?HamSCI and the 2017 Total Solar Eclipse?, in HamSCI-UK, Milton Keynes, UK, 2017.\par \par N. A.  Frissell, Ackermann, J. R., Earle, G. D., Erickson, P. J., Gerrard, A. J., Gerzoff, R. B., Gunning, S. W., Hirsch, M., Katz, J. D., Kaeppller, S. R., McGwier, R. W., Miller, E. S., Moses, M. L., Perry, G., Reyer, S. E., Shovkoplyas, A., Silver, H. W., Vega, J. S., and Team, R. B. N., ?HamSCI and the 2017 Total Solar Eclipse?, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Keystone, CO, 2017.\par \par N. A.  Frissell, Vega, J. S., Katz, J. D., Gunning, S. W., Gerrard, A. J., Moses, M. L., Earle, G. D., Miller, E. S., Huba, J. D., Hirsch, M., Silver, H. W., Reyer, S. E., Ackermann, J. R., Suhar, M. D., and Bern, D., ?HamSCI and the 2017 Total Solar Eclipse (Experiment Description)?, in ARRL and TAPR Digital Communications Conference, St. Louis, MO, 2017.\par \par N. A.  Frissell, Engelke, W., Katz, J. D., Gunning, S. W., and Vega, J. S., ?HamSCI and the 2017 Total Solar Eclipse (First Results)?, in ARRL and TAPR Digital Communications Conference, St. Louis, MO, 2017.\par \par N. A.  Frissell, Ackermann, J. R., Dzekevich, J., Earle, G. D., Erickson, P. J., Gerrard, A. J., Gerzoff, R. B., Gunning, S. W., Hirsch, M., Katz, J. D., Kaeppler, S. R., McGwier, R. W., Miller, E. S., Moses, M. L., Perry, G., Reyer, S. E., Shovkoplyas, A., Silver, H. W., Vega, J. S., and Team, R. B. N., ?HamSCI: The Ham Radio Science Citizen Investigation (Banquet Presentation)?, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Keystone, CO, 2017.\par \par J. D.  Katz, Engelke, W., and Frissell, N. A., ?The H.A.R.C. Database and Visualization Utilities?, in ARRL and TAPR Digital Communications Conference, St. Louis, MO, 2017.\par \par H. W.  Silver, ?HamSCI: Ham Radio Science Citizen Investigation?, QST, vol. 100, no. 8, pp. 68-71, 2016.\par \par N. A.  Frissell, Moses, M. L., Earle, G., McGwier, R. W., Miller, E. S., Kaeppler, S. R., H. Silver, W., Ceglia, F., Pascoe, D., Sinanis, N., Smith, P., Williams, R., Shovkoplyas, A., and Gerrard, A. J., ?HamSCI: The Ham Radio Science Citizen Investigation?, in Fall 2016 American Geophysical Union, San Francisco, 2016.\par \par N. A.  Frissell, Moses, M. L., Earle, G. D., McGwier, R., and H. Silver, W., ?HamSCI and the 2017 Total Solar Eclipse (HamSCI Founding Document)?. 2015.\par \par }