[time-nuts] WWVB D-PSK-R updated 12 Mhz Costas and Div chain

paul swed paulswedb at gmail.com
Tue May 21 09:02:58 EDT 2013

Several questions have come up.
The program for the schematics is free and thats the .sch extension.

I have had a couple of comments about .obj files. I did not send any that I
am aware of.
Maybe email is changing the .sch to a .obj. But I just downloaded and
opened the 2 files sent yesterday and they are .sch and open fine.
Hope that helps.

On Mon, May 20, 2013 at 6:24 PM, paul swed <paulswedb at gmail.com> wrote:

> Hello to the group.
> I have updated the WWVB costas loop. Thanks to some guidance from fellow
> time-nuts.
> The key items;
> A error in the 74hc86 gate pins.
> A new 12 Mhz 10 ppm Oscillator that uses available known parts.
> These changes have been tested and behave well.
> I would also add that the 150 uf filter caps needs to be very low leakage.
> Also the TRF receiver is included no changes to it just thought I would
> keep the set together.
> Regards
> Paul

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