[time-nuts] What's available in the way of DSP for new WWVB?

[Bob kb8tq]

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 <hmurray at megapathdsl.net> 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.
> 
> 
> 
> 
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