[hpsdr] GPS 1pps output

[Mike Seguin]

Luis, CT1DMK did the original RefLock that VE1ALQ updated.

http://www.qsl.net/ct1dmk/1pps_lock01.pdf

Mike

On 6/13/2018 2:04 AM, Roger Rehr W3SZ wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Brooks Shera wrote an article for QST back in 1998 that used 1pps timing
> to lock.  I built it at that time and it worked great.
> http://www.a-aengineering.com/QST_GPS.pdf
> http://www.a-aengineering.com/gps.htm
> https://www.febo.com/pipermail/time-nuts/2013-April/075627.html
> 
> Bill Kaune W7IEQ wrote an article for QEX on a system he designed, with
> good detail, in 2013.
> https://www.tapr.org/pdf/DCC2014-GPS-to-Fine-Tune-Rubidium-Standard-W7IEQ.pdf
> 
> 73,
> 
> Roger Rehr
> W3SZ
> 
> 
> 
> On 6/13/2018 1:03 AM, Stephen Lee wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Gerry Sweeney, a very clever electronics tech, has coded PPS sync
>> timing.  Here is a good place to start:
>>
>>
>> https://gerrysweeney.com/build-a-10mhz-rubidium-frequency-standard-and-signal-distribution-amp-for-my-lab/
>>
>>
>> Enjoy!   Stephen Lee, N7RV
>>
>> On 6/12/2018 5:50 PM, K4KV wrote:
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> Hello,
>>>
>>> I have just ordered a qrp labs beacon kit with a gps unit that has a
>>> 1pps output.
>>>
>>> I have been told that they use software to 'read' the gps and then
>>> automatically
>>>
>>> correct the Siliconix programmable oscillator.  Granted, this takes
>>> quite a while to
>>>
>>> get it right.
>>>
>>> But still, I cannot see how it can be very accurate compared to a
>>> 10Mhz GPS output
>>>
>>> reference.
>>>
>>> These 1pps output modules are quite inexpensive.
>>>
>>> Can someone point me to a white paper where someone describes how to
>>> use software
>>>
>>> to correct a programmable oscillator using a 1pps system?
>>>
>>> 73
>>>
>>> Glen K4KV
>>>
>>>
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-- 

73,
Mike, N1JEZ
"A closed mouth gathers no feet"