Here is a project which mixed the Time Kube IF output back to 10 MHz for use as a frequency (not time) standard:http://schematicsforfree.com/archive/file/Oscillators%20and%20Generators/Misc/10Mhz%20Frequency%20Standard%20Using%20Wwv.pdf I believe that the Time Kube uses a 3-transistor mixer / 455 kHz IF amplifier signal chain, followed by an IC audio amplifier. I would think that the signal delay inside the receiver from antenna to audio output would be a couple of hundred microseconds, much less than one cycle of the demodulated audio “tick”.-- Bill Byrom N5BB
On Fri, Dec 8, 2017, at 07:13 AM, jimlux wrote: > On 12/7/17 1:29 PM, Bill Hawkins wrote: > > > > > So yes, this could be interesting for a hobbyist, but it won't add > > anything to Science. > > A MASER is overkill. Heck, so are Rubidium and Caesium. > > A naked crystal will be rock solid compared to received WWV. > > > > OTOH, NTP has marvelous mathematical tricks to reduce Internet > > propagation delay. > > A scheme to reduce varying atmospheric delay would be useful, > > if there> > weren't much better ways to get a standard frequency. > > > > What you are talking about is "better ionosphere modeling", which is > something that a lot of people have spent a lot of time and effort on,> > without a lot of success. That said, there are some real time > ionograms> out there that are fascinating to watch. It doesn't take a very > sophisticated receiver to receive the signals from a variety of > ionosonde transmitters. > > Juha Vierinen has a variety of interesting software: > http://www.sgo.fi/~j/gnu_chirp_sounder/ > > Juha also has done stuff with measuring the frequency of beacon > satellites > > http://www.sgo.fi/~j/jitter/web/ > > > > _______________________________________________ > 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.
