Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

[Dave Olean]

I live in Southern ME, next to the NH border and 30 miles inland.  I listened on 1.915 MHz at 1815 Z today, (Tuesday) and could hear it quite well at about S5 with my NE beverage. When I changed to my vertical to receive, I could barely detect it in the noise. My beverage is aimed at 45 degrees true. So it can't be too far away if I can hear it at mid day. At night it is VERY loud.

Dave K1WHS