Good to hear. But I do not see superstar rcvrs around anymore. I thought the thread was on building up a converter? Must have lost the direction at some point. Regards
On Thu, Aug 25, 2011 at 7:35 PM, [email protected] <[email protected]> wrote: > Hi Paul, > I am looking into using one of my SuperStar GPS receivers for this. I'll > just tap into the circuit at the 35.42 MHz filter. I just need to build up > an amplifier for some addional level contol plus providing isolation for the > SuperStar. I am going to use the 10 MHz TCXO that's on the receiver to > start, then if that much works OK I'll use the 10 MHz signal from the > Odetics unit. I'll keep you informed on my progress. 73, Doug, K4cle. > > > Connected by DROID on Verizon Wireless > > -----Original message----- > From: paul swed <[email protected]> > To: Discussion of precise time and frequency measurement < > [email protected]> > Sent: Thu, Aug 25, 2011 15:47:59 GMT+00:00 > Subject: Re: [time-nuts] Austron GPS antennas > > Thread died off is it still going? > > > On Thu, Aug 18, 2011 at 6:32 PM, Magnus Danielson < > [email protected]> wrote: > > On 18/08/11 23:49, [email protected] wrote: >> >> Hi Magnus, thanks for that information. I had forgotten about that >>> Plessey GP2010 and GP2015 RF chip. The only problem is that you have to >>> do a divide by 7 on the 40 MHz signal that Plessey did in the GP2021 >>> correlator IC. Using an old SuperStar RX is a good reconmendation. >>> Thanks. Doug, k4cle. >>> >>> >> There is a whole little line of GPS receivers of the same chips. >> >> Hacking in external clock onto a SuperStar isn't all that hard. >> >> You will not have to do the divide by 7 in this case, For this application >> you get 35,42 MHz out in the second filter stage, just tap in on that with >> >> > a > >> diffrential pair after the filter and you are essentially done. In the >> GP2010/2015 topology it goes back in for AGC and sampler action. If your >> receiver expects the 35,42 MHz signal, it gets inserted into that place >> > from > >> a receiver buffer with filter and then the rest of the analog and digital >> path is continued... that's how they use up two GP2010/2015 chips, but can >> get away with longer cable runs since the damping of 35,42 MHz is much >> > less > >> than that of 1575,42 MHz in RG-58.... >> >> >> Cheers, >> Magnus >> >> ______________________________****_________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/****<https://www.febo.com/cgi-bin/**> >> >> mailman/listinfo/time-nuts<htt**ps://www.febo.com/cgi-bin/** > mailman/listinfo/time-nuts<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<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<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.
