Exactly. The narrower the filter, the more it will cost. In general.
On Fri, Sep 30, 2011 at 11:10 AM, Tom Holmes <[email protected]> wrote: > 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: [email protected] [mailto:[email protected]] 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 -- [email protected] >> > To unsubscribe, go to >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > and follow the instructions there. >> > >> >> -- >> Chuck Forsberg WA7KGX N2469R [email protected] 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 -- [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.
