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S.  Fernandes, Perry, G. W., Trigo, T., Frissell, N. A., Gibbons, J., and Collins, K., ?Characterizing ionospheric variability through HF Doppler measurements: a statistical and numerical ray tracing analysis?, Frontiers in Astronomy and Space Sciences, vol. 13, 2026.\par \par D. F.  Sanchez, Frissell, N. A., Perry, G. W., Engelke, W. D., Coster, A. J., Erickson, P. J., J. Ruohoniemi, M., Baker, J. B. H., Harvey, L., and R. Luetzelschwab, C., ?Climatology of Traveling Ionospheric Disturbances Observed by HamSCI Amateur Radio with Connections to Geospace and Neutral Atmospheric Sources?, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.\par \par D. F.  Sanchez, Frissell, N. A., Perry, G., Harvey, L., Engelke, W. D., Coster, A. J., Erickson, P. J., J. Ruohoniemi, M., and Baker, J. B. H., ?Climatology of Traveling Ionospheric Disturbances Observed by HamSCI Amateur Radio with Connections to Geospace and Neutral Atmospheric Sources?, in American Geophysical Union Fall Meeting, New Orleans, LA, 2021.\par \par J. R.  Hobart, Farmer, J. O., Mikitin, G., Waugh, D., Benedict, R., Cerwin, S. A., Collins, K. V., Kazdan, D., Gibbons, J., Romanek, V. I., and Frissell, N. A., ?Construction and Operation of a HamSCI Grape Version 1 Personal Space Weather Station: A Citizen Scientist?s Perspective?, in American Geophysical Union Fall Meeting, New Orleans, LA, 2021.\par \par D. Witten III, Kim, H., Madey, J., Cowling, S., and Frissell, N. A., ?Characterizing and Optimizing the behavior of a Ground-based Magnetometer for Ionospheric Space Weather Observations?, in ARRL-TAPR Digital Communications Conference, Virtual, 2020.\par \par }