Good catch Bob 6180. Thanks Paul
On Sun, Jun 16, 2013 at 6:19 PM, Bob Camp <[email protected]> wrote: > Hi > > MSA 6180 or MSA 8160 or …. > > Bob > > On Jun 16, 2013, at 5:43 PM, paul swed <[email protected]> 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 -- [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.
