There was a recent discussion with the above subject line about SVN-64. I've noticed that my Adafruit hasn't given me any holdovers for a few days, so I checked on the sat's status. The link below says it's been usable since May30. Hmmm. http://www.navcen.uscg.gov/?Do=gpsShowNanu&num=2014047 Bob - AE6RV