Virtual
April 17, 2021
April 17, 2021
April 17, 2021
3
10.18260/1-2--38310
https://peer.asee.org/38310
338
Paul Crilly is a Professor of Electrical Engineering at the United States Coast Guard Academy. He is also Chief/Department Chair of the Electrical Engineering and Cyber Systems Section. He received his Ph.D. from New Mexico State University, his M. S. and B.S. degrees at Rensselaer Polytechnic Institute, all in Electrical Engineering. He was previously an Associate Professor of Electrical and Computer Engineering at the University of Tennessee and was a Development Engineer at the Hewlett Packard Company. His areas of interest include laboratory development, antennas, wireless communications, signal processing, and instrumentation.
We discuss the use of NIST’s high-frequency (HF) broadcast signals to enable undergraduate engineering students to experience and thereby better understand how the ionosphere can enable transcontinental wireless communication. We will demonstrate this phenomenon using signals of opportunity such as NIST’s 5 and 10 MHz time/frequency broadcasts. Also discussed is how the D-layer absorbs signals below 8 MHz and thus inhibits long distance transcontinental sky-wave radio propagation during the daylight hours.
Crilly, P. B. (2021, April), Using NIST’s Shortwave Broadcast Signals to Experience and Understand Ionospheric Radio Propagation Paper presented at 2021 ASEE St. Lawrence Section Conference, Virtual. 10.18260/1-2--38310
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