Many folks. The paranoid tinfoil hat crowd
Folks who are concerned that law enforcement has placed a GPS tracker on their car. Truckers avoiding log enforcement Truckers who want to sleep rather than drive. Ambulance drivers who want to sleep but claim to have been held up at hospital. Emergency services personnel (fire,ems,law enforcement) who want to take the company vehicle where they are not supposed to. Just a few of the many I can think of! On Oct 3, 2012, at 0:40, "Ron Ward" <[email protected]> wrote: > Hi: > Other than a terrorist, who would want to jam GPS? > Ron > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Magnus Danielson > Sent: Tuesday, October 02, 2012 2:28 PM > To: [email protected] > Subject: Re: [time-nuts] GPS Jammer > > On 10/02/2012 11:05 PM, John Lofgren wrote: >> The 0.5 W and + 10 dBm numbers in the specs don't work out. +10 dBm is 10 > mW. I suspect that the 1/2 watt is really the DC input power. > > Now, that makes sense. > >> And, I'd agree about the range. +10 dBm into a dipole at 10 meters gets > you about -44 dBm at the receiver antenna in a free-space model. That's > really loud compared to the nominal -130 to -140 dBm you'd hear from the > satellites. > > Indeed. Even for 10 mW it was not reasonable. No wonders that "1-10 m > jammers" cause such grief to DHS. Serious overkill. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
