Consumer WWVB products long ago moved from hobbyist-friendly DIP to gumdrop IC's (black epoxy blobs covering chip bonded directly to PCB).
You can either buy a $10-$20 consumer WWVB clock and cut out the PCB section around the gumdrop IC/filter crystal/ferrite stick, or buy a module e.g. http://www.hkw-shop.de/Empfangstechnik-AM/Empfangsmodul-EM2S-60-kHz.html and ferrite stick. The 60kHz (WWVB etc) filter crystals are listed (but not stocked) at Digi-Key etc too (actually "60.002" and/or "60.005" khz parallel resonant crystals are series resonant at 60kHz). Tim N3QE On Tuesday, August 4, 2015, Donald <[email protected]> wrote: > I have been looking into WWVB receivers. > > I see that the sources I had purchased from a few years ago are no longer > available(in the US). > > I see that the format of the WWVB signal has changed a little as well. > > Has NIST done something to not allow chip manufactures to make new > chips/modules ? > Is there any reason why we (in the US) are not allowed to buy these > chips/modules any longer ? > I did get a WWVB receiver out of the UK recently. > > Does anyone have a schematic for building a simple WWVB receiver ? > > Any information would be grateful. > > - Don > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
