Back in the dawn of time we had a WWVB receiver that we checked our lab standard with, and WWVB was only stable overnight in MA. ?I'd have to say if you can get a good (ground wave) signal 24x7 you might be able to lock a local standard to it, but otherwise you might have to watch the reference and tweak your standard occasionally, as we did.
I'd use a GPSDO, those are easy, cheap, and usually pretty solid.
73, Willie N1JBJ
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On Sep 17, 2023, at 5:27 PM, Jerry Moyer via groups.io <ac5jm@...> wrote:
There are several cheap WWVB receivers available.? Has anyone successfully implemented WWVB as a 1pps time source rather than GPS for QRP Labs kits?? How did you do it and what are the pros and cons between WWVB and GPS?? One that comes to my mind is a clear view of the sky is not required with the WWVB 60kHz signal.? A disadvantage might be potential interference to 60kHz from LED light dimmers and such.? Which is more reliable?? Maybe have one automatically back up the other?
-Jerry AC5JM
