[OKDXA] FT8 and Computer Time

N5OK coyday62 at gmail.com
Tue Oct 22 11:14:00 EDT 2019


Jeff,

Great tip.  I use D4 plus time fudge.  I try to keep as many pluses as
minuses in the DT column.

On Tue, Oct 22, 2019 at 9:29 AM Jeff Martin <jeffmartin at valornet.com> wrote:

>   Ever wonder why you are not decoding the FT8 station, or he is not
> decoding you? Perhaps your computer or his computer time is off. My laptop
> time will drift by a couple of seconds over a day's period of time. Timing
> is critical with the sequencing of FT8 or FT4 signals. If you have your
> computer set to sync with a windows time source, that may be sufficient.
> Some use other programs like Dimension 4 (D4). I use a little hockey puck
> USB device that pulls time from the GPS satellites along with a program
> called NMEATime. When I was in VP2V, my hockey puck device wasn't working.
> I
> didn't take time to mess with it then. I later found that its port number
> had changed in windows... thank you windows... Anyway, if you don't have
> internet or for some other reason you can't sync with a time source,
> another
> handy program to have is TimeFudge, available from the QRZ page of W9MDB:
> https://www.qrz.com/db/W9MDB .
>   Look at the DT column showing several decodes on the display of FT8. The
> DT number should be 0.0 or close to it. If you see numbers up above 1.0
> plus
> or minus you may need to adjust your clock. A time sync program would do
> this automatically. Or you can do it manually with TimeFudge. I used
> TimeFudge every day from VP2V... when I remembered... hi... Hope this
> helps...
>
> 73,
> Jeff - K5WE
>
>
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-- 
Coy C Day, N5OK
20685 SW 29
Union City, OK 73090
H(405) 483-5632 C(405) 448-2368
n5ok at arrl.net


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