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KA3BVJ > WWV 14.11.21 02:32l 9 Lines 1707 Bytes #999 (0) @ WW
BID : 31979_KA3BVJ
Read: GUEST
Subj: WWV Test starting Nov. 15
Path: IZ3LSV<IQ2LB<IW2OHX<IW0QNL<ON0AR<GB7CIP<EI2GYB<N3HYM<KA3BVJ
Sent: 211114/0122Z 31979@KA3BVJ.#EPA.PA.USA.NOAM BPQ1.4.65
WWV
Beginning November 15, 2021, WWV and WWVH will be broadcasting a test signal on minute 8 of each hour on WWV, and minute 48 on WWVH. This signal has been created to assist in ionospheric research, and is a joint effort of the Ham Radio Citizen Science Investigation (HamSCI) and NIST. The signal consists of various tones, chirps, and Gaussian noise bursts. The signal may be modified occasionally.
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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