I'm at 43S, 172E and the minimum number of birds I'm seeing in the middle of the days is 4 with a maximum of 12 each night. No sign of a let up here, guano all over the place :)
Steve Rooke On 26/03/2010, Raj <vu2...@gmail.com> wrote: > Rob, I am 13N 77E approx. > > Bob, I checked everytime and no birds. I setup two GPSDOs with seperate > antennas and both went to hold over. > > Its been happening ever day at some times. Even I get the error on this page > http://www.n2yo.com/whats-up/?c=20 > > Lady heather says the doppler is high or something and satellites not > usable. Sometimes there are 3 sats overhead and none usable! > > At 26-03-10, you wrote: >>What's your latitude Raj? >> >>Rob K >> >>-----Original Message----- >>From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>Behalf Of Bob Camp >>Sent: 25 March 2010 11:15 PM >>To: Discussion of precise time and frequency measurement >>Subject: Re: [time-nuts] Missing GPS satellites >> >>Hi >> >>I still think it's a bird on the antenna. >> >>Bob >> >>On Mar 25, 2010, at 7:11 PM, Magnus Danielson wrote: >> >>> J. Forster wrote: >>>> From an unnamed, but VERY credible source: >>>> >>>> "> It might be that the DoD is turning the civilian signals off in >>>> combat >>>> >>>>> areas to deny GPS to the Taliban and others. >>>>> >>>> >>>> Quite possible. This countermeasure was discussed more than ten years >>>> ago. >>>> >>>> It is possible to turn of the civilian signals -- or to leave then on >>>> but _jam_ them within a selected area -- without interfering with US >>>> military use of the satellites. A modern military does not need the C/ >>>> A code to acquire lock on a satellite. It can acquire the encrypted P >>>> code directly." >>> The preferred method of controlling the access to GPS within a region is >>> GPS jammers, and the full set of efforts being spent on strengthening >>> the allied forces availability to signal is to ensure ability to survive >>> from jamming signal, which includes removing need for C/A locking prior >>> to Y-code lock with direct lock methods, transfer of time, solutions and >>> ephemeris data, and eventually means to direct additional power towards >>> the area and the improved M-code. >>> >>> Turning of the C/A code of a satellite will effect the 1/3 of the earth >>> area that it sees, and for that to be effective in a certain area, you >>> need to do that to 6-8 sats to turn it off, and that will significantly >>> reduce the GPS availability for so large geographical areas that things >>> they want to work will run closer to failure. So no, turning of C/A code >>> is not what they want to do it. They can, but they want to avoid it. >>> >>> Cheers, >>> Magnus >>> >>> > > -- > Raj, VU2ZAP > Bangalore, India. > > > _______________________________________________ > 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. > -- Steve Rooke - ZL3TUV & G8KVD A man with one clock knows what time it is; A man with two clocks is never quite sure. _______________________________________________ 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.