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NL1VKL > PACKET 02.08.21 12:00l 65 Lines 2102 Bytes #999 (0) @ WW
BID : 32914NL1VKL
Read: GAST DQB562
Subj: Re: Direwolf FixBit
Path: DBO595<DBX320<DBX233<VB1BOX<NL3VKL
Sent: 210801/2019Z @:NL3VKL.NBO.NLD.EU #:1841 [Uden] $:32914NL1VKL
From: NL1VKL@NL3VKL.NBO.NLD.EU
To : PACKET@WW
Message from: NL1VKL@NL3VKL
Quoting from a previous message...
>
> English:
>
> Hi folks(Hoi, mensen),
>
> here is another possibility to let Direwolf decode better which might
> enable or improve the reception of more distant stations.
>
> Set the option "FIC_BITS" in your config file to 1 or higher.
> So:
> FIX_BITS 1
>
> If this option is enabled, Direwolf tries to swap a bit back and forth
> in not correctly received messages until the message matches the
> checksum again.
>
> Depending on the value set, i.e.
> FIX_BITS 1,
> FIX_BITS 2,
> FIX_BITS 3,
> ...,
> DW tries to exchange the number of bits.
> The whole thing goes naturally to load of the CPU.
>
> I use the option FIX_BITS 3 and run 2 instances of DW on a Raspberry PI
> 4 with 2 external soundcards plus Noden software (TNN) and other programs.
> The PI does a great job.
> Per instance DW about 10 percent CPU load in the peak.
> I have additionally activated the FX.25 encoding in DW which should also
> generate some CPU load.
>
> Greetings from Salzwedel,
>
Hi,
Direwolf's FIX_BITS isn't really a good option to decode better. It can, and
does, corrupt data by the nature of its design/principle
It's actually not a good option to use at all and it's better to set
FIX_BITS to 0 and only enable FX.25.
73! Dave de NL1VKL
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