[Elecraft] Clock Accuracy

Jim Brown jim at audiosystemsgroup.com
Sat Oct 19 16:23:46 EDT 2019


Clock stability will depend on a lot of things, including temperature 
and the quality of the clock circuitry. Over the years, the clocks in my 
Thinkpads have tended to be pretty stable. The $20 Casio on my wrist has 
drifted about 30 seconds in the two years I've worn it.

Since first using JT65 6-8 years ago, I've used 
http://www.timesynctool.com/  with the same result. I found it far 
easier to install than Meinberg (which I tried to install to be able to 
incorporate data from a USB GPS puck when expeditioning out of range of 
internet). Instead, I settled on BktTimeSync for that purpose.

73, Jim K9YC

On 10/19/2019 12:57 PM, David Gilbert wrote:
> My laptop, which I use for FT8, fires up about 2.5 seconds off. That's 
> unusable for FT8, which is why I use Meinberg NTP to sync it.  I 
> couldn't care less if it was 2 minutes off for logging (even for 
> contesting), but for FT8 it should be, as you say, 0.5 seconds or better 
> for best results.  Meinberg (which is free) puts me within one or two 
> tenths of a second of everyone else.



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