A key component of the HamSCI mission is to encourage amateurs to conduct and share their own research and experiments. Larry Serra N6NC recently published two articles in QEX Magazine from his trans-North Pacific 40m propagation projects: The first, "Why Summer 40m Propagation Is So Good Between Japan and the US Pacific Coast" (QEX SEPT/OCT 2022 p.14), examined 12 years of July JA-US 40m propagation conditions and CW Skimmer results on days of JA domestic CW contests and proposed that the relatively calm water under the almost wall-to-wall summertime North Pacific HIGH pressure centers provided nearly +12dBm enhanced low-angle signal strength due to a reduction of surface reflection absorptions in the 3-ionospheric refraction, 2-sea surface reflection propagation path.
Join the WWV Amateur Radio Club, the National Institute of Standards and Technology (NIST), the Fort Collins Museum of Discovery (FCMoD), and the HamSCI for two excellent lectures to be live streamed on March 2, 2023 at 5:00PM Mountain Std Time (0000 UTC):
The History of WWV Frequency Broadcasts - Glenn Nelson, WWV Staff, National Institute of Standards and Technology (NIST)
WWV as a Beacon for Citizen Science - Dr. David Kazdan and Rachel Boedicker - Case Western Reserve University/HamSCI Aidan Montare - NIST Boulder/HamSCI
The High-frequency Active Auroral Research Program (HAARP) will be conducting a research campaign from Oct. 19 to Oct. 28, with transmissions taking place between 1400-0600 UTC (see table below for details). Actual transmit days and times are highly variable based on real-time ionospheric conditions. All information is subject to change. This campaign will be the most scientifically diverse ever conducted at HAARP; some particularly notable experiments include a first-of-its-kind attempt to bounce a signal off of Jupiter, investigation into possible causes of the airglow phenomenon known as STEVE (Strong Thermal Emission Velocity Enhancement), and testing the feasibility of using radio transmissions to measure the interiors of near-Earth asteroids. Experiments benefiting from amateur radio support or having citizen science applications are described in the HAARP Letter to the Amateur Radio Community, along with known frequency information. An official HAARP press release is available from the University of Alaska Geophysical Institute.
A new study by Sam Lo et al. from the Centre for Space at the University of Bath entitled "A Systematic Study of 7 MHz Greyline Propagation Using Amateur Radio Beacon Signals" was just published in the peer-reviewed journal Atmosphere.Abstract: This paper investigates 7 MHz ionospheric radio wave propagation between pairs of distant countries that simultaneously lie on the terminator. This is known as greyline propagation. Observations of amateur radio beacon transmitters recorded in the Weak Signal Propagation Reporter (WSPR) database are used to investigate the times of day that beacon signals were observed during the year 2017. The WSPR beacon network consists of thousands of automated beacon transmitters and observers distributed over the globe. The WSPR database is a very useful resource for radio science as it offers the date and time at which a propagation path was available between two radio stations, as well as their precise locations. This paper provides the first systematic study of grey-line propagation between New Zealand/Eastern Australia and UK/Europe. The study shows that communications were predominantly made from the United Kingdom (UK) to New Zealand at around both sunset and sunrise times, whereas from New Zealand to the UK, communication links occurred mainly during UK sunrise hours. The lack of observations at the UK sunset time was particularly evident during the UK summer. The same pattern was found in the observations of propagation from Eastern Australia to UK, and from New Zealand and Eastern Australia to Italy and the surrounding regions in Europe. The observed asymmetry in reception pattern could possibly be due to the increase in electromagnetic noise across Europe in the summer afternoon/evening from thunderstorms. URL: https://www.mdpi.com/2073-4433/13/8/1340
Dr. Frank Howell K4FMH will present a seminar based on his two-part article in the July & August 2022 issues of the Radio Society of Great Britain’s RadCom journal, written with Dr. Scott McIntosh of NCAR in Colorado, titled, “On the Cusp of a Scientific Revolution?” The seminar includes the latest theory construction and model estimation. The seminar will be held on September 1, 2022 at 4 PM Eastern (2000z) during the weekly Solar Eclipse QSO Party Zoom Telecon. Frank is Professor Emeritus at Mississippi State University, Affiliated Faculty at Emory University, and a scientific member of HamSCI.