The recent discussion of solar flares screwing up GPS timing was interesting.
I just watched Todd Humphreys TED talk again. He's focused on location, but does mention time in terms of stock exchanges. Todd Humphreys: How to fool a GPS http://www.ted.com/talks/todd_humphreys_how_to_fool_a_gps.html He's got a good discussion of GPS jammers and spoofers, but no geeky details. What's the spectral/power output of the typical eBay GPS jammer? Suppose I lived near a major highway. Could I build a receiver that would count jammers driving by? Could I track them (at least somewhat) with a directional antenna on a rotator? Is this something semi-geeky amateurs could contribute to? What sort of gear has harmonics in the GPS band? ------ I assume people are familiar with the trucker who jammed the FAA test in NJ. Here is a good story: http://www.insidegnss.com/node/3676 That article has a link to commercial gear targeted at this market. http://www.exelisinc.com/solutions/signalsentry/Pages/default.aspx The graphics shows 3 receivers is a port/harbor setting. -- 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.