From Professor Fybush...64/KFI.
http://www.fybush.com/sites/2010/site-101015.html
In an earlier (2006) TSOTW on KFI (http://www.fybush.com/sites/2006/site-060120.html),
Scott mentions a "mysterious box" that used to piggy-back a VLF data signal onto the KFI
transmissions. Did this have anything to do with strange "bird-chirping" sounds heard on
640 (along with KFI programming) late at night circa 1969?
http://www.fybush.com/sites/2010/site-101015.html
In an earlier (2006) TSOTW on KFI (http://www.fybush.com/sites/2006/site-060120.html),
Scott mentions a "mysterious box" that used to piggy-back a VLF data signal onto the KFI
transmissions. Did this have anything to do with strange "bird-chirping" sounds heard on
640 (along with KFI programming) late at night circa 1969?