[RTTY] Decoding troubles after taking a break

[Mike Ricketts]

Thanks Joe,

Yes, the default format is set at 48000 Hz.

The MMTTY clock rate was not at 12000 Hz, it was at 11025. I have changed
this, for the future.

Is there some reason why all of this would work with the previous
configuration, but all become intermittent after shutting down the
application?

I have used this same configuration for a handful of RTTY contests, and not
noticed this before.



73,
Mike ND9G

On Sun, Jul 16, 2017 at 8:50 AM, Joe Subich, W4TV <lists at subich.com> wrote:

>
> I needed to take a break for dinner, so shut everything down for an hour.
>> When I came back and started everything up again, all 3 of the decoders on
>> my PC had trouble decoding anything. They would get some decoded, then just
>> stop decoding. Then they would start back to
>> decoding again. This happened on pretty much every QSO after the
>> break.
>>
> Is the "Default Format" of your sound card set correctly?
>
> With 2Tone, you want the "Default Format" to be 48,000 Hz and you need
> to define the Clock Rate in MMTTY (Config | Misc) to be 12000 Hz or you
> will have sample rate issues.
>
> 73,
>
>    ... Joe, W4TV
>
>
>
> On 7/16/2017 9:31 AM, Mike Ricketts wrote:
>
>> Perhaps someone here has some insight as to what was happening with my
>> decoding last night.
>>
>> For the duration of the contest, I was running N1MM+ with MMTTY as the
>> engine, using an additional 2 decoding windows of 2Tone, and also had the
>> decoder going on my IC7300.
>>
>> During the beginning (8 hours or so) of the contest everything was working
>> great.
>>
>> I needed to take a break for dinner, so shut everything down for an hour.
>> When I came back and started everything up again, all 3 of the decoders on
>> my PC had trouble decoding anything. They would get some decoded, then
>> just
>> stop decoding. Then they would start back to decoding again. This happened
>> on pretty much every QSO after the break.
>>
>> The decoder on the radio was doing fine, so I ended up using that for most
>> of the rest of the contest. So I know the signals were ok.
>>
>> I thought maybe there was some errant process sucking up resources, but I
>> watched the performance monitor in task manager for a while, and noticed
>> nothing out of the ordinary. The only process with any significant
>> resource
>> usage was MMTTY, and total CPU usage was 25% or less, which is normal for
>> me when running MMTTY. There were no scans, or anything like that,
>> running.
>>
>> Thanks in advance for any ideas you may have on the cause.
>>
>> 73,
>> Mike ND9G
>> _______________________________________________
>> RTTY mailing list
>> RTTY at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rtty
>>
>> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>