THE IONOSPHERE AND PROPAGATION - YouTube Video
THE IONOSPHERE, SHORTWAVE RADIO
AND PROPAGATION
YouTube Video
Several weeks back, a post in Thomas Witherspoon's SWLing.com blog alerted readers to a YouTube series on aspects of radio including SDRs, RADAR, radio astronomy etc, from the MIT Student Cable channel. One of these videos especially captured my interest, concerning shortwave radio wave propagation.
The lecture is delivered by Dr Philip J. Erickson, W1PJE, assistant director and head of the Atmospheric and Geospace Sciences group at Haystack Observatory, operated by Massachusetts Institute of Technology (MIT). Dr Erickson offered an interesting presentation which he titled "Radio Wave Propagation and Dynamics in Near Earth Space: Interactions with the Complex Natural World". (Note that the title of the lecture and the title listed on the YouTube video are different!).
From the YT video channel:
Since the late 1950s, MIT Haystack, located in Westford, MA, has used radio science to conduct frontier research into the properties of the near-Earth space environment, including the ionosphere, neutral atmosphere, overlying plasmasphere, and the magnetosphere that surrounds our planet.
Dr Erickson is a licensed Extra class amateur and a member of ARRL, RSGB, the Nashoba Valley Amateur Radio Club (NVARC), and the HamSCI initiative. He holds B.S. and PhD degrees in electrical engineering and space plasma physics from Cornell University and is a member of both the American Geophysical Union and the International Radio Science Union. Dr Erickson is the lead principal investigator of a National Science Foundation sponsored UHF megawatt class ionospheric radar at MIT Haystack, and has authored or co-authored 75+ refereed articles in the areas of ionospheric and magnetospheric phenomena and radio physics. Dr Erickson started his radio career with a random wire and a Hallicrafters SX-110 receiver, and enjoys 6 meter and HF propagation, QRP, EME, RF design, and digital weak signal modes.
For MEDXR readers interested in the technical aspects of shortwave communication, this video some insights that are perhaps new, while others will be familiar to them. However, Dr Erickson's presentation is well worth investing the viewing time of 1:30 hours. (In the embedded version below, I've skipped the first four minutes of dithering around while the good doctor waits for everything to get set up!) 😁 Recommended viewing!
The book recommended in the above video is:
"The Sun, The Earth and Near-Earth Space: A Guide to the Sun-Earth System" by John A Eddy, published by NASA. This book can still be purchased online. However, the full text of the book has been generously made available for FREE by the late author's wife, Barbara Eddy after John's untimely death in 2009. You can download the entire textbook in PDF format at:
http://ilwsonline.org/publications/SES_Book_Interactive%20508.pdf
THE IONOSPHERE, SHORTWAVE RADIO
Since the late 1950s, MIT Haystack, located in Westford, MA, has used radio science to conduct frontier research into the properties of the near-Earth space environment, including the ionosphere, neutral atmosphere, overlying plasmasphere, and the magnetosphere that surrounds our planet.
The book recommended in the above video is:"The Sun, The Earth and Near-Earth Space: A Guide to the Sun-Earth System" by John A Eddy, published by NASA. This book can still be purchased online. However, the full text of the book has been generously made available for FREE by the late author's wife, Barbara Eddy after John's untimely death in 2009. You can download the entire textbook in PDF format at:
73 and good DX to you all,
Rob Wagner VK3BVW
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Very interesting, thanks for sharing.
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