[time-nuts] WWVB BPSK Receiver Project? (fwd)

[Marek Peca]

> That would be 36ns group delay variation if I did the math correctly.

OK

And in article P. Hetzel: Time dissemination via the LF transmitter DCF77 
using a pseudo-random phase-shift keying of the carrier, 2nd EFTF 
Neuchatel, 1988., they conclude with timing results of about 2..10e-6 s 
RMS over ~1000km distance.

However, I do not know what is the reality and whether such a performance 
is limited by atmosphere/ground conditions, or whether it could be better 
within LF band.

> However, what material are you using for the ferrite? The material can have a 
> significant tempco.

In my project, I have used noname rod taken from within DCF77 alarm clock.
If I will recreate it, I will look for something defined at the store.


Regards,
Marek