Magnus you are right. Its interesting in that several parts are easily available at semi-reasonable cost. Mini- circuits has a all in one synthesizer module dsn-2036 for the LO and they also have very nice IF filters. The BPF-a76 appears to be exactly the right bandwidth for a GPS IF. There are some things to work through but they seem reasonable. Regards Paul. WB8TSL
On Mon, Nov 30, 2015 at 5:02 PM, Magnus Danielson < [email protected]> wrote: > Paul, > > Many GPS receivers only use 2,046 MHz bandwidth, but some use the full > 20,46 MHz even if they only do C/A. Guessing that you are working on > down-conversion for an old box, then 2,046 MHz will be your answer. > > Cheers, > Magnus > > > On 11/30/2015 06:37 PM, paul swed wrote: > >> I am looking at building a GPS down converter. >> LO 1500 Mhz locked to a 10 MHz ref. >> The IF will be at 75.42 Mhz how wide should it be? >> >> My question is simple. >> >> What should the IF pass band bandwidth be? >> Not sure if it should be 3-4 Mhz, 10 or 15 wide. >> >> Thanks >> Paul >> WB8TSL >> _______________________________________________ >> 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.
