[pskmail] Re: Robust PSK mode not decoding

  • From: Franco Spinelli <frspin@xxxxxxxxx>
  • To: pskmail <pskmail@xxxxxxxxxxxxx>
  • Date: Mon, 11 Nov 2013 14:04:29 +0100

Already reported to linuxham group on Yahoo.


For now nothing other than CPU usage control and removing all not essential
I suppose some problems in Fldigi code or in a library used only in PSKRXXX

Yesterday I have decode, with A20, Thor100 and CPU usage was less than 70%


Franco Spinelli

2013/11/11 Tarmo Huttunen <tarmopaha@xxxxxxxxx>

> Thanks Franco and John
> John, I have not had yet time to check what you asked earlier...we have
> new born baby on family and raspberry have lower priority and I havent
> touch raspi since my last post.
> Franco, thanks to confirm problem, it is obviously same as yours and seems
> to be related to ARM-platform, not only to raspberry.
> I think I subscribe ti fldigi mailing list and ask help from there, or do
> you have alredy reported there?
> Tarmo
>  On Nov 10, 2013 6:55 PM, "Franco Spinelli" <frspin@xxxxxxxxx> wrote:
>> I re-open an old message in the list, started at 5 Nov. 2013 by Tarmo
>> and ended at 8 Nov. 2013 by John Douyere.
>> I am testing a A20-olinuxino, Allwinner CPU dual core at 1 Ghz with 1 Gb
>> of RAM.
>> Fldigi decode correct all modes as:
>> PSKxxx all modes
>> Contestia all modes
>> Olivia all modes
>> MFSK all modes from 16 to 64, no 128, 64L and 128L
>> THOR 16,22 and also 25x4 using 1500 Hz as center freq
>> but no decode at all of PSKRxxx modes
>> Test made with a microphone in local show a 30 dB of S/N and a -30 dB
>> for imd.
>> Signal transmitted in PSKRXXX mode by A20 are correctly decoded on other
>> PC (x86) running same version of Fldigi
>> CPU usage is about 50% so it is not a power problem.
>> The problem is same as shown in first message from Tarmo.
>> I suspect a Fldigi problem. I have compiled last version of Fldigi on
>> A20 in 30 minuts of elapsed time.
>> All test are done using Debian Wheezy for armhf.
>> On same machine:
>> Jpskmail client 1.5.29 work OK without PSKRxx modes and use 80% of CPU
>> Jpasmail client 2.1.0-j, with java from OpenJDK, don't work. It use 100%
>> of CPU and sound is intermittent.
>> Regards
>> Franco Spinelli

Other related posts: