Interesting that they use jammers. The guys on the ambulances just wrap the antennas with the foil from burger wrappers or the like.
On Jul 28, 2012, at 0:34, Jim Lux <jim...@earthlink.net> wrote: > On 7/27/12 6:42 PM, Brian, WA1ZMS wrote: >> Does anyone know if there is ANY recent active Lightsquared testing taking >> place in the SFO area of the US? >> >> > > Very unlikely.. they've lost their experimental license. > >> >> I'm dealing with a day-job issue with GPS clocks in the Bay Area showing >> "GPS unlocked" errors from 3rd party equipment. >> >> > > > there are myriad sources of interference out there. Jammers are a BIG > problem in urban areas (truckers and cab drivers use them to defeat their GPS > based tracking systems and time clocks). > > there's a great set of articles over the past few months in GPS World about > it. > > >> >> >> >> >> >> -Brian, WA1ZMS >> >> >> >> _______________________________________________ >> 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. >> > > > > _______________________________________________ > 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. _______________________________________________ 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.