A general comment on the use of Schmitt-trigger and counters on a
conditioned analog signal:
You will likely run into issues with missing counts or additional counts
when the receiver experiences fadings or glitches (lightning, etc.)
If this happens, the 60 kHz signal will jump in phase.
Ole
Den 08-10-2020 kl. 20:07 skrev [email protected]:
I have read several different articles where the WWVB phase shift is
eliminated by doubling the signal to 120 kHz. Several members of the
list have built these units.
Assume I build a circuit to double the incoming signal and use a schmitt
trigger to get a 120 kHz square wave. If I then divide that signal back
down to 60 kHz will that signal be strong enough to swamp out the WWVB
signal? I'm guessing it will be since it is at the 5 volt level and
somewhere in the +25 dBm or greater range.
Ray,
AB7HE
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