[Scan-DC] 169.6 MHz

[David L. Wilson]

> Frequencies just below that have been used by federal agencies for
> transmitting hydrological and meteorological data. They are brief bursts
of
> digital packet data, every minute or so. If it fits that pattern, then it
could be

IFLOWS in VA/WV/MD and adjacent states used 169.575.  Often mistaken as
Federal, the stations, though joint with the National Weather Service, was
essentially managed by the respective state Emergency Management Agencies
(and thus FCC licensed).
http://www.vaemergency.gov/content/integrated-flood-observing-and-warning-sy
stems-iflows