tag:blogger.com,1999:blog-4239086175450706526.post3646552068085163628..comments2024-03-15T03:13:55.317-04:00Comments on Mark Turner's Mysterious World: Probe of unexplained humming noise widens past Calgary, Alberta CanadaMark Turnerhttp://www.blogger.com/profile/01958210239770165566noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-4239086175450706526.post-10220219975672807202013-07-31T04:44:44.887-04:002013-07-31T04:44:44.887-04:00In Sandpoint Idaho. Faint, Very low, two tone, fre...In Sandpoint Idaho. Faint, Very low, two tone, frequency. If I we're to draw it, it would appear as a square wave, the higher pitch approximately 2 seconds, lower pitch about 1 second, continuous, noticeable at night. We don't have any kind of a city or utility plant that could generate a noise like that. DWardhttps://www.blogger.com/profile/17327757494147276893noreply@blogger.com