My general thought on computer time accuracy......start decoding stations.   Watch the DT value of those decoded.  I find if the majority are less than <0.5 +/- then your computer clock is good.   If most stations decodes  are greater than >0.5 +/-, then I'd look for a better time reference.  I'm not a MAC user so I can't comment on a source.

73

Bob, K4TAX



On 2/20/2018 10:55 AM, John Stengrevics wrote:
Richard,

I run a Mac here.  Go to System Preferences, Unlock, enter “us.pool.ntp.org 
<http://us.pool.ntp.org/>”, Lock and you will be good to go.

You should Unlock, delete, and renter the above daily to make sure you are 
synched - takes 30 seconds.

John
WA1EAZ

On Feb 20, 2018, at 11:49 AM, Richard <[email protected]> wrote:

Before I get into the list of problems I’m having using WSJT-X FT8 on my K3S, 
I’d like to know:

1. Is the automatic clock setting in my Mac mini (running Sierra, 10.12) good 
enough for modes like JT65 and FT8?

2. If not, what’s a good reliable time sync app I can download and use?

Cheers!

Richard Kunc — W4KBX

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