Very interesting on the zarlink any idea what hackable GPS rcvr that might be?
To confirm it the odetics GPStar is 35.42. I mix that with 10 MC ref from the austron X 4 mult to 40 MC. Result 75.42 needed for the austron. This minimized hacking within the austron. Granted I could have also built a filter set to separate the single coax but it was far simpler to tap off the IF by a seperate rg 174 cable and keep the signals separate. At the time I had no idea that all of it would work. This was about 6 months ago. So filter sets were not of interest. Though I have not proved it I may suspect that the arrangement might let the odetics work simultaneously while using the austrons stabilized reference. Regards Paul WB8TSL On Thu, Aug 18, 2011 at 1:59 PM, Magnus Danielson < mag...@rubidium.dyndns.org> wrote: > On 18/08/11 16:11, Rob Kimberley wrote: > >> Yes, 35.42 MHz. >> Don't know what levels are required. However, I do know that Meinberg's >> model GPS-ANT is compatible. >> > > It is expected from the use of the Zarlink frontend chip, which takes 10 > MHz, locks a 1400 MHz oscillator to it, divides it down by 10 to 140 MHz > which is then used for first and second LO. > > Thus, 1575,42 MHZ becomes 175,42 MHz and then 35,42 MHz. > > You could hack a GPS module with the GEC Plessey/Zarlink frontend to > achieve this. > > Cheers, > Magnus > > > ______________________________**_________________ > time-nuts mailing list -- time-nuts@febo.com > 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
