[CW] WWV/WWVH participating in project to study the ionosphere and its effects on high frequency (HF) radio propagation

[D.J.J. Ring, Jr.]

WWV/WWVH Scientific Modulation Working Group

NIST is participating in a new project to study the ionosphere and its
effects on high frequency (HF) radio propagation. As part of the WWV/WWVH
Scientific Modulation Working Group, radio stations WWV and WWVH will each
broadcast test signals once per hour that will allow operators using a type
of software defined receiver (SDR) to record the signal data at their
location and upload it to a central server for analysis.

The test signals will initially consist of several seconds each of Gaussian
white noise, chirps varying up and down in frequency, and tones varying in
amplitude, frequency and length. This initial test will help characterize
transmitting and receiver equipment and configurations, and may be useful
in determining time of flight measurements of the transmitted signal. The
signals will be sent at 8 minutes past each hour on WWV, and 48 minutes
past each hour on WWVH.

The project is coordinated by HamSCI, the Ham Radio Citizen Science
Investigation and includes representatives from the University of Scranton,
Case Western Reserve University, Massachusetts Institute of Technology
Haystack Observatory, University of Alabama, New Jersey Institute of
Technology, TAPR, the WWV Amateur Radio Club, interested amateur radio
operators and others interested in citizen science.
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