[time-nuts] GPS-based frequency reference in "Everyday Practical Electronics"

Graham / KE9H TimeNut at austin.rr.com
Sun Jun 28 11:21:48 EDT 2009

Be sure to read what the article says the systems delivers for output
stability before you decide to build it.  It disciplines an inexpensive 
(not OCXO) with very short averaging times, with a GPS navigation receiver,
not a timing receiver. 

It is good enough to set the time base in your HF rig to a fraction
of a Hertz, but not much more accurate than that.

--- Graham / KE9H


Bruce Lane wrote:
> 	Good catch, thanks! I just ordered both back issues. That'll give me something to do with the 15L module I have stashed in my bench drawer.
> 	One question: I placed the order, and completed the checkout process, but have not yet been able to download the issues. As near as I can tell, the publishers actually E-mail you a download link once they finish processing on their end, yes? If that's the case, I'm guessing I won't see the download code until, say, Monday?
> 	Happy timing.
> *********** REPLY SEPARATOR  ***********
> On 28-Jun-09 at 09:48 Don Key wrote:
>> Was just catching up on my past issues of "Everyday Practical
>> Electronics" when I noticed that the April & May 2009 issues featured a
>> constructional article for a GPS-based frequency reference.
>> It is based on the Garmin "GPS 15L" module, and the unit provides a 10MHz,
>> 1MHz & 1pps output. It has an LCD display to show time, date, position,
>> number of satellites etc.
>> Back issues are available here:-
>> http://www.epemag3.com/index.php?option=com_virtuemart&page=shop.browse&category_id=48&Itemid=2

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