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"...The noise is intermittent, and comes on for roughly 10-15 minute intervals, and when it goes off, it is completely quiet for another roughly 10 minutes. The amplitude peaks are at approximately...(etc.)" I have had a cycling source like that with a 120 Hz component several times in my neighborhood. It was vapor type street lights. The light cycled on and off in some cases in unison with the noise, but not always. Sometimes the light did not ever come on, but did produce the intermittent QRNN. 73 & luck, Roy K6XK Iowa _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
