Sticking with the intent to keep this non-political, what good is a filter if the offending signal is within the necessary passband?
Tom Holmes, N8ZM Tipp City, OH EM79 > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Chuck Forsberg WA7KGX N2469R > Sent: Friday, September 30, 2011 10:55 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] GPS Interference Question > > If LightSquared deploys their high powered LTE network in the satellite band > the GPS world will become very interesting indeed. Are LightSquared willing > to spend $20,000 to upgrade the GPS on my Skylane to a new model which > does not yet exist? > > With that many transmitters we may experience areas where RF from multiple > high power transmitters creates hot spots. In some places pieces of metal > with non Ohmic bonds will create mixing products, some of which may fall > directly within GPS bands. These effects have not been simulated. > > Who knows who the FCC is listening to - the GPS industry including millions > of current users, or those who appear to have bought under the table favor. > This could make Solyndra look like small change. Film at 11. > > > On 09/30/2011 07:02 AM, Marco IK1ODO -2 wrote: > > At 15:44 30-09-11, Jason wrote: > > > >> To filter out the L2 signal, would an actual GPS receiver have to be > >> replaced / modified? > >> > >> Or would a more simple and cheaper alternative be to get a new > >> antenna (with fancy filtering) to replace my existing roof-top > >> antenna and expect all my old equipment to be happy? > > > > I think that a new antenna/filter/amplifier unit would be ok. But the > > problem is the installed base of receivers, including all those costly > > units used for geodesy or navigation, that have embedded antennas. > > Those will be hard to modify. > > > > 73 - Marco IK1ODO > > > > > > > > _______________________________________________ > > 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. > > > > -- > Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com > Developer of Industrial ZMODEM(Tm) for Embedded Applications > Omen Technology Inc "The High Reliability Software" > 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 > > > _______________________________________________ > 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.