Hi It's been at least 10 minutes since I've made a similar mistake on the list ….
Bob On Jun 16, 2013, at 6:39 PM, paul swed <paulsw...@gmail.com> wrote: > Good catch Bob 6180. > Thanks > Paul > > > On Sun, Jun 16, 2013 at 6:19 PM, Bob Camp <li...@rtty.us> wrote: > >> Hi >> >> MSA 6180 or MSA 8160 or …. >> >> Bob >> >> On Jun 16, 2013, at 5:43 PM, paul swed <paulsw...@gmail.com> wrote: >> >>> OK no schematic. It was 2MB. But it was a scan of my notes. Happy to post >>> to a sight or two. Can include some pictures also. >>> Operation is simple the msa 6180 receives wwvb and in my case I tap off >> of >> >> 6180 >> >>> a wwvb antenna multi-coupler. >>> Output of the 8160 controls inverters that select a 60 Khz clock signal >> to >> >> 8160 >> >>> select high amplitude or low amplitude for the bit. >>> The 60 Khz clock uses another 60 Khz xtal from mouser or digikey. >>> The system consistently allows the Spectracom 8170 to work. Also my fear >> of >>> delay due to this processing is unfounded. >>> Compareing the wwv audio ticks and tones to the 8170 display I can't tell >>> the difference. Good enough as they say. >>> No attempt has been made to filter or shape the cmos output. The 8170 >>> filters do a fine job. >>> Use a low power regulator to drop the 8170s antenna voltage to 5 volts. >> The >>> system draws 13 ma. >>> >>> Other comments you could use a ferrite rod as the app note states. Or you >>> could feed power to the old spectracom antenna and use it. Essentially >> the >>> remodulator sits in the middle of the coax. This project assembled in a >> few >>> hours yesterday. The hardest part is soldering the pesky 16 pin soic to >> an >>> expander board. >>> The 8160 chip is available in the US through a distributor. But really >> not >> >> 8160 >> >>> sure how thats going to work out. >>> Literally any wwvb clock chip should be able to do this job. But no one >>> seems to sell them any more. >>> Hopefully the schematic will get through to the Time-nuts. >>> As always no intent to kit anything. >>> Regards >>> Paul >>> WB8TSL >>> _______________________________________________ >>> 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. >> > _______________________________________________ > 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.