[time-nuts] Rubidium oscillator controlled clock

Ulrich Bangert df6jb at ulrich-bangert.de
Mon Jul 12 12:47:29 UTC 2010


Bernd,

> Would you recommend simple 74xx74 flipflops 
> driven by the original 10 MHz signal delivered by the 
> rubidium oscillator for resynching? 

In principle, yes. However not directly clocked by the rubidium itself but
from a clean ttl signal that has been made out of the LPRO's sine. There has
been a long discussion here about the "howto" of this. As a good starting
point I suggest this:

http://www.ko4bb.com/~bruce/CLKSHPR.html

While the ADCMP600 are available well in Germany (for example from FARNELL)
the MSOP enclosure is very tricky to solder and for a bit less in frequency
performance a LT1016 will do it for you too.

Best regards
Ulrich Bangert

> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von ulmann at vaxman.de
> Gesendet: Montag, 12. Juli 2010 14:06
> An: TIME-NUTS at febo.com
> Betreff: Re: [time-nuts] Rubidium oscillator controlled clock
> 
> 
>  Hello Ulrich - 
> thank you very much for kind reply - this is a great 
> suggestion. Would you recommend simple 74xx74 flipflops 
> driven by the original 10 MHz signal delivered by the 
> rubidium oscillator for resynching? 
>  Thank you very much and have a great day - sincerely, Bernd. :-)
> 
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