[time-nuts] wtd: WWVB info

Donald donvukovic at gmail.com
Wed Aug 5 23:03:05 EDT 2015

On 8/5/2015 6:44 PM, Jim Lux wrote:
> I'm not sure it would buy you much.. you'd have something running at 
> 240kHz switching the inputs to the detector?
> It's MUCH easier to just digitize the 60kHz with a high resolution 
> converter.  And have a nice BPF in front of the digitizer.
> The tayloe/quadrature sampling detector (a key part of the Flexradio 
> original design) is more convenient if you're making a direct 
> conversion receiver that needs to tune up to 10s of MHz, since it 
> allows you to use a slow ADC with lots of bits.  It's basically a I/Q 
> mixer and will take a lot more parts in total than just getting a 
> 192ksps 24 bit converter.

Thanks for the numbers.

I was uncertain how to scale the sample rate for the I/Q.


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