Hi: Other than a terrorist, who would want to jam GPS? Ron -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Magnus Danielson Sent: Tuesday, October 02, 2012 2:28 PM To: time-nuts@febo.com 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 -- 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.