after the bpsk is removed true. I have done that. A simple RC filter and a 100K over 50ohm divider to get the signal to a reasonable level. Add a coupling cap because all of the old receivers output a preamp voltage.
On Fri, Oct 9, 2020 at 11:35 AM Bob kb8tq <[email protected]> wrote: > Hi > > For a full setup, you could do it a lot of ways. A setup of: > > Antenna -> front end -> ADC -> MCU -> D/A would be one approach. Various > bits like a local clock also would get into the design. There are *many* > other > approaches. > > ========== > > There are a lot of D/A’s that will clock in the 100’s of KHz range. If you > are only > trying to come up with an analog of a WWVB signal the “10 bit” D/A’s found > in > some MCU’s would do the trick. In the setup above, the ADC would likely be > harder to come up with than the DAC. > > Since you are only trying to come up with a carrier, the need for a D/A is > not > an absolute one. Taking a square wave of some sort and filtering it a bit > would > be adequate to drive most of these old WWVB receivers. > > Bob > > > On Oct 8, 2020, at 11:42 PM, Hal Murray <[email protected]> wrote: > > > > > > I assume it needs an antenna, front end, and D/A. > > > > What's available in the way of D/A that's good for 60KHz? Is the > problem > > easier if the D/A box has external clocking? > > > > -- > > These are my opinions. I hate spam. > > > > > > > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
