[Uram-rejections] Time and Frequency References

Tue Apr 19 17:57:11 BST 2016

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> From: Brian Reay <no.sp at m.com>
> Newsgroups: uk.radio.amateur.moderated,rec.radio.amateur.moderated,rec.radio.amateur.homebrew
> Subject: Re: Time and Frequency References
> Date: Tue, 19 Apr 2016 16:53:33 -0000 (UTC)
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> rickman <gnuarm at gmail.com> wrote:
> > How important are time and frequency references to amateur radio 
> > operators?  I've been working on a radio controlled clock design that 
> > would be capable of generating a 32.768 kHz, 60 kHz, 240 kHz, 1 MHz and 
> > 10 MHz frequency references in addition to providing the time and date. 
> >  Initially it would be capable of receiving the 60 kHz transmissions of 
> > WWVB and MSF.  With minor tweaks other stations could be received.
> > 
> > Would this be useful to others?
> > 
> 
> 
> 
> A good frequency reference is extremely useful. 
> 
> As for time, some modes also require a good time reference.
> 
> There are amateurs who enjoy experimenting with very accurate frequency and
> time reference techniques. One posts to uk.ra from time to time (no pun
> intended) but his Callsign escapes me.
> 
> In the past, systems using 60kHz and other transmissions etc. were probably
> the most commonly used but I suspect many now use a GPS locked reference. I
> use a homebrew GPS locked frequency reference, it has a 10MHz VXCO which is
> locked to the 10kHz output of a GPS unit.
> 
> If you have designed something I am sure others would be interested in
> seeing it.  
> 
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