for all the info. Perhaps, you know it, but perhaps not: to
get the different services and tasks started up when you
start your PC, you must type “MSCONFIG” +CR inside the
pseudo-DOS panel (under the “Exécuter” option in French, and
probably “Run” or “Execute” option in English).
you can remove all services or starting tasks which seem
useless (and take CPU for nothing). However be cautious with
services (with starting tasks it is less important).
the task manager, I have not found a good method to kill the
“svchost.exe” processes, the ones which take much CPU,
without crashing the PC ☺.
I do bring a 2nd PC onboard at times which is a very near
clone of the 1st as it's job is to step in as 1st sub, and
which is available for fax while standing by in the dug-out.
This one has replaced a previous 1st due which failed, all 3
are the same model for interchangeability and are now quite
I forgot to mention further inputs to the wheelhouse PC from
weather instruments, all tasks run together 24/7 successfully.
Thanks for explaining that the Windows task priority causes
interrupts, and the DC charger interrupts are extra to those.
I ran Task Manager in a window beside a decoding fax which did
show that Diagnostic Policy Service was taking up too much CPU
while the fax was being totally screwed up. I haven't
recreated the extent of that, but a Google search suggested
that this was often the culprit in Windows 10. The link
provided a small routine to run as a .bat file which should be
run as Administrator to deal with that - e.g. see details
Another link (https://www.wraase.de/download/wrx137/WRX-137%20Manual.pdf)
has this explanation:
"If you observe some strange horizontal image-shifting during
reception (stepping), please
refer to the 2 pages of special notes “Stepping problem”. Such
is caused by short
interruptions of the serial data stream and can in most cases
be cured by switching off all the
Windows Power Saving Modes."
I haven't found the 2 pages referred to, but this does
identify the problem and the solution looks plausible from my
experience with the charger.
echo ... Set DPS service start type to manual ...
sc config DPS start= demand
echo ... Find PID of DPS service ...
for /f "tokens=2 delims=[:]" %%f in ('sc queryex dps ^|find /i
"PID"') do set PID=%%f
echo ... Kill DPS service
taskkill /f /pid %PID%
echo ... Delete sru Folder ...
rd /s "%windir%\system32\sru"
echo ... Set DPS service start type to auto ...
sc config DPS start= auto
echo ... Start DPS service ...
sc start DPS
On 31/01/2021 20:07, Patrick Lindecker
Windows, data are given by packets (contrary to DOS where
data were fetched sample by sample). Windows being a
multi-tasks system, if some task has a high priority, it
can prevent a decoder to fetch the packet of data and you
will miss part of the decoding. For fax, it is a pity
because there is no repetition as for AIS…
suppose that very fast PC with very fast hard-disk are no
so sensitive to these interruptions.
solution would perhaps be on old laptop reserved for fax
>The reception of
the image is stable when the charger cable is unplugged
Moreover, you have
less parasitic from the electric net.
>As well as a Wefax/digi-mode
decoder, the same PC serves as a chartplotter with both
GPS and AIS inputs, while at the same time as a terrestial
DTV receiver when it would be painful to miss an exciting
>match when on a long solo coastal passage.
I understand ☺
I've had a similar experience decoding Wefax as Antti had,
not only on Multipsk but also with Fldigi and OpenCPN where
some of the processing is done by SDRSharp and VAC. An
additional reason for the interrupts described which I
noticed is that the skips coincide with the battery charging
icon switching to charge when using a DC charger with a
notebook PC on my boat! The reception of the image is stable
when the charger cable is unplugged, or when the battery is
fully charged. This interrupt glitch seems to also occur
when decoding SYNOP where it manifests as an alpha/numeric
switch or loss of a character.
As well as a Wefax/digi-mode decoder, the same PC serves as
a chartplotter with both GPS and AIS inputs, while at the
same time as a terrestial DTV receiver when it would be
painful to miss an exciting match when on a long solo
On 27/01/2021 22:37, Patrick Lindecker
It’s better now, just a very small loss of
for the answer. I disabled a few background apps and now
only one small jump is pictured.
Red point my QTH
Thierry is right, there is another soft
taking CPU resources. In Fax, Multipsk must be the only
soft to work, because 1/10 sec of reception lost and the
picture is shifted.
My two cents: I think you may have a software, maybe in
background, which is, using at the same time you are
receiving fax, a lot of ressources of your PC.
At experimented the same problem in the past, even if PC
was a "strong" one.
73 de Thierry
Le 25/01/2021 à 17:00, Antti
Takalo-Kippola via groups.io a écrit :
image is not on the same line. Does anyone have this
Lähetetty Windows 10:n Sähköpostista