John: I missed this on its intro to the group. Great paper and effort.
It's also a very useful intro/primer to measurement methodology beyond
application to only the u-blox family. Thanks for leveraging the NSF for
our benefit!
Don
On 2021-08-28 05:02, Julien Goodwin wrote:
On 24/8/21 11:51 am, John Ackermann N8UR wrote:
In 2020 I did an extensive evaluation of the timing ability of the
u-blox LEA-M8F, NEO-M8N, NEO-M8T, NEO-M9N, ZED-F9P, and ZED-F9T. The
work was made possible by support from the HamSci consortium
(https://hamsci.org) under NSF grants supporting HamSci activities.
I was sure I'd posted about the paper on time-nuts, but I can't find
any
record that I did, so this is a belated announcement. It's available
for download from
https://hamsci.org/sites/default/files/publications/2020_TAPR_DCC/N8UR_GPS_Evaluation_August2020.pdf
As BobC says, "Lots of fun!"
Neat.
For a project I might eventually get back to I was looking at using the
M8F controlling an external oscillator. I built a test board[1], but I
stopped once I had the GPS working, I can't recall if I even enabled
the
control of the external oscillator, but I certainly didn't make any
attempt to characterize it.
Once I get my frequency datalogging issue solved for my other project I
might try and see what I get.
1: https://laptop006.livejournal.com/60072.html the DAC, oscillator and
supporting components are all in the bottom-left.
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The whole world is a straight man.
----------------------
Dr. Don Latham AJ7LL
PO Box 404, Frenchtown, MT, 59834
VOX: 406-626-4304
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