Maplin is indeed a UK parts supplier. I will have a look at the digikey and mouser websites and see if there are any suitable ferrite cores available – I’ll get back to you.

With regards the WWV code, it looks like it may be a little more complex to decode than the MSF (UK) code, because it is on a -100Hz subcarrier. The “Digital Time Code” of the wikipedia article may help you a bit: http://en.wikipedia.org/wiki/WWV_(radio_station). You will probably need some decent filters to isolate the subcarrier and ensure you aren’t swamped by the main carrier. There is a little information on this site: http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver36.html.

With regards driving the 7 segment displays, the best way to do that is with a purpose-made encoder device. I used a MAX7219. They communicate via the SPI protocol and are bound to be widely available.

I’ll get back to you with regards the ferrites.

Regards,

Andy

Isn’t “MAPLIN” a UK-based parts supplier?

Would you have any Part Numbers for a ferrite core from either “Digi-Key” or “Mouser” here in the U.S.? (www.digikey.com and http://www.mouser.com).

Since publishing your original “60KHz Receiver”, have you made any improvements to your circuit? Or, do you know of any other 60KHz receiver schematics that would serve as a good “Receiver/Clock” circuit?

I would like to build a WWV receiver/clock that can demodulate the WWV code and then drive a series of 7-segment LED displays, showing the “Year, Month, Day, Day of Year, Hour, Minute, Second” and anything else that could possibly be displayed. Would you have any information on anything like that? If so, I would GREATLY appreciate in receiving whatever you may have.

Regards,

JBWilliams

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It pains me to look at the scruffyness of them now, but I’m sure you’ll be able to work it out!

Let me know if you have any problems, I’d be happy to help.

If you were to remove the 10n capacitor then the trace would look like picture 3, however with the 10n capacitor there, you get the trace as shown in picture 4.

My mistake when drawing it from left to right!

Thanks for sharing your work. I have a comment. In your schematic it appears as though test points 3 and 4 are pointing at the same node yet the pictures you drew of the output are different.