Most/all of my GPS toys stopped working for a few hours late Tue evening. A few where I have good logging ran out of satellites. Did anybody else notice anything similar? Was it local interference, or something at the GPS level? I'm in Menlo Park California. That was mid afternoon local time, PDT -- These are my opinions. I hate spam.

From: Hal Murray Most/all of my GPS toys stopped working for a few hours late Tue evening. A few where I have good logging ran out of satellites. Did anybody else notice anything similar? Was it local interference, or something at the GPS level? I'm in Menlo Park California. That was mid afternoon local time, PDT ============================= Any GPS outages I've seen due to poor satellite configuration usually last far less than two hours. Local jamming would be my first guess. David -- SatSignal Software - Quality software written to your requirements Web: http://www.satsignal.eu Email: david-taylor@blueyonder.co.uk

No problems in Albuquerque, NM. On 8/19/2015 2:11 AM, Hal Murray wrote: > > Most/all of my GPS toys stopped working for a few hours late Tue evening. A > few where I have good logging ran out of satellites. > > Did anybody else notice anything similar? > > Was it local interference, or something at the GPS level? > > I'm in Menlo Park California. That was mid afternoon local time, PDT >

-------- In message <20150819081108.08EBD406060@ip-64-139-1-69.sjc.megapath.net>, Hal Mu rray writes: >Most/all of my GPS toys stopped working for a few hours late Tue evening. A >few where I have good logging ran out of satellites. > >Did anybody else notice anything similar? > >Was it local interference, or something at the GPS level? Nothing on my side of the planet. Most likely a "White Van Man" who doesn't want the boss to track his use of the company car outside business-hours. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.

According to the official GPS testing (interference) website, there were tests at China Lake scheduled for sometime(s) on August 18-20, 2015. I think that Menlo Park is somewhat under 300 NM (nautical miles) from China Lake (depending on exactly where the test was located), and the expected interference range was about 252 NM. So you might have been at the edge of the affected area. See: http://www.navcen.uscg.gov/pdf/gps/gpsnotices/GPS_Interference.pdf http://www.gps.gov/support/user/ I don't see any satellite outages in the official report: http://adn.agi.com/SatelliteOutageCalendar/SOFCalendar.aspx And note that except for certain government tests and operations, GPS jamming is illegal, and violations are prosecuted: http://www.gps.gov/spectrum/jamming/ -- Bill Byrom N5BB On Wed, Aug 19, 2015, at 03:11 AM, Hal Murray wrote: > > Most/all of my GPS toys stopped working for a few hours late Tue evening. > A > few where I have good logging ran out of satellites. > > Did anybody else notice anything similar? > > Was it local interference, or something at the GPS level? > > I'm in Menlo Park California.  That was mid afternoon local time, PDT > > > > -- > These are my opinions.  I hate spam. > > > > _________________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.