This is Skip Crilly‘s updated paper/presentation, “Radio Search for Extraterrestrial Intelligence SETI is fun ! Geographically-spaced Synchronized Signal Detection System“, updated July 2019. Skip presented it at the Society of Amateur Radio Astronomers conference at Greenbank, WV on August 4, 2019. The link will open as a pdf file.
These two wave files are part of the presentation: Figure 9 Simultaneous Tones Slow wave file and Figure 9 Simultaneous SETI Tones wave file.