[Skimmertalk] WSJT-X/FT8 skimming: high PC CPU utilization limiting count of spots

[Bob Wilson, N6TV]

I see far too many decoders, indicating that there are multiple carriers,
perhaps from unshielded Ethernet cables or nearby power supplies or
computers or Routers or perhaps front end overload.  The problem is not the
CPU, it is the local digital noise or intermod.

Please press the *Band Scope* button in *RTTYSkimmer* and cycle through the
bands using the button in the upper left corner of the band scope display.
Every yellow dot is a decoder on a carrier, probably far more than you
should have, especially on 40 and 20m.  Maybe they are all on the FT8
signals, so these frequencies should be excluded by editing
RTTYSkimServ.ini.

You may also use HDSDR to see all the steady carriers which will create a
decoder in both CW Skimmer Server and RTTY Skimmer Server.

Yes you can have 8 bands of CW and 3 or 4 bands of RTTY by eliminating
RTTYSegments (but not center frequencies) on some bands, but that is not
the problem here.

73,
Bob, N6TV

On Sun, Jul 28, 2019 at 3:19 PM Jorge Diez - CX6VM <cx6vm.jorge at gmail.com>
wrote:

> I did some test this afternoon with my  Core i7 -4790 CPU @ 3.60 GHz with
> 8GB of RAM
>
> CW and RTTY on 160, 80, 40, 20, 17, 15, 12 and 10
>
>
>
> CW and RTTY on 160, 80, 20, 17, 15, 12 and 10
>
>
>
> CW and RTTY on 6 bandas: 160, 20, 17, 15, 12 y 10
>
>
> Is there a way to have 8 bands on CW and 3 or 4 bands on RTTY?
>
> thanks!
>
>
>
>
>
>
>
>
> El dom., 28 jul. 2019 a las 14:18, Wes Cosand (<wes.cosand at gmail.com>)
> escribió:
>
>> I have found that limiting the RTTY skimming bandwidth on 40 meters can
>> make a big difference in CPU utilization
>>
>> Wes WZ7I
>>
>>
>
> --
> 73,
> Jorge
> CX6VM/CW5W
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