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Hello Tim,
The "usual" way of getting a WWVB receiver chip is to buy a cheap WWVB clock and rip out the chip and antenna. Some have external chips/antenna connected via cable already. Agree. Many like the Sony even contain two crystals. These alone can cost more than a whole clock. But if it's a matter of pride you can build your own even without any special chips. When I was a kid I built a receiver for DCF in Europe. No crystals, only a few transistors and 741 opamps. It worked great, except that I didn't have a PC or anything to decode the signal with. It was just the detected pulses but these came through nice and clear. With today's opamps you wouldn't even need any transistors to do it. A decent quad can be had for 50c while I paid a whopping $3 for a single re-labeled 741 of rather dubious quality level. Regards, Joerg http://www.analogconsultants.com |
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