<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr"><br><br><br>Begin forwarded message:<br><br></div><blockquote type="cite"><div dir="ltr"><b>From:</b> Jonathan <<a href="mailto:mr_integrity20@yahoo.com">mr_integrity20@yahoo.com</a>><br><b>Date:</b> February 21, 2023 at 6:12:39 PM EST<br><b>To:</b> "<a href="mailto:emuman100@gmail.com">emuman100@gmail.com</a>" <<a href="mailto:emuman100@gmail.com">emuman100@gmail.com</a>><br><b>Subject:</b> <b>Fw: [VLF] Article on the 'Opera2015' measurement campaign</b><br><br></div></blockquote><blockquote type="cite"><div dir="ltr"><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]-->
<br><br><br><a href="https://overview.mail.yahoo.com/?.src=iOS">Sent from Yahoo Mail for iPhone</a><br><br><p class="yahoo-quoted-begin" style="font-size: 15px; color: #715FFA; padding-top: 15px; margin-top: 0"><span style="color: #AAAAAA;">Begin forwarded message:</span><br><br>On Tuesday, February 21, 2023, 4:03 PM, Renato Romero <<a href="mailto:rromero@alice.it">rromero@alice.it</a>> wrote:</p><blockquote class="iosymail"><div id="yiv2648947160">Dear All,<br>I am pleased to inform you that, after a long process, the experience of the VLF Openlab Observatory network and the Opera2015 monitoring programme has been published in a scientific journal. The article is entitled:<br>"<strong>Opera 2015 Project: Accurate Measurement Equipment for Earthquake Electromagnetic Emissions and Radio Seismic Indicato</strong>r".<br><br>It summarises the technical details of the observatory network <a href="http://www.vlf.it">www.vlf.it</a>, explains and documents the development of a radio seismic indicator, and illustrates a rational approach to the study of radio seismic precursors. It can be downloaded from this address:<br><span style="text-decoration:underline;"><a href="https://www.mdpi.com/1424-8220/23/5/2379/pdf">https://www.mdpi.com/1424-8220/23/5/2379/pdf</a></span><br><br>Beyond the topic of radio precursors and the important conclusions reached, the article demonstrates how, even with inexpensive devices such as self-made sensors and sound cards, it is possible to collect valid data that can be used for scientific research projects.<br><br>I would like to thank the authors who produced the paper with me, and I am grateful to all the people who have collaborated in various ways on this project over the years.<br><br><br>Best regards<br>Renato Romero
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[<a href="mailto:mr_integrity20@yahoo.com">mr_integrity20@yahoo.com</a>]<br>
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