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

[paul swed]

Hi Hal
I think your asking for an A/D if this is a receiver.
I can speak to the front end.
In the the US the signal in the east is some 10-60 uv during the day.
To leverage the full scale of the A/D that has to be amplified to the A/Ds
full scale. Say 1-2 V.
Thats easily some 90DBv of gain. So a good front end TRF design with
filtering would work great. The next part of your question is a lot harder.
What use will the receiver be used for?
Everything I see is that the signal is sampled as I & Q The carrier and -90
degrees. The carrier ends up being locked at a higher frequency perhaps 10X
60 KHz and that is used with  two A/Ds.
For me it gets muddy just about here. Could 1 A/D be used and the sampling
done in the data domain? Suspect thats a yes. Then when you have the
samples what to do with them.
That goes back to the what does the receiver do question.
Regards
Paul

On Fri, Oct 9, 2020 at 12:20 AM 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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