[Elecraft] K3 V4.61 CW decode broken?

[Wayne Burdick]

Brian,

Virtually all other reports on this release have said the CW decoder  
was working very well. I just retested this morning, too.

If you're seeing E's and T's, try using a much narrower bandwidth,  
50-150 Hz, and turn on the noise blanker to reduce the level of  
impulse noise. I recommend using THR 2 or 3 for most signals, and THR  
1 for very weak signals. These fixed settings usually work better than  
AUTO.

When there is no CW signal above the required threshold, you'll see  
random characters decoded.

73,
Wayne
N6KR


On Dec 7, 2012, at 5:41 AM, Brian Alsop wrote:

> Was checking out RTTY decode which worked fine.  Decided to look at  
> CW decode.
>
> Here are my observations.
>
> Not working well here or op here inept at using it.
>
> My perception is that it did much better in older versions.   
> However, I didn't use it much then.
>
> ZL9HM was 599 @35 wpm this AM.  WPM check always showing between 48  
> and 82 wpm. Decode with WPM check off was bunch of E's and T's.  Not  
> due to noise.
>
> Using 400 Hz filter in CW mode.  Tried auto, both choices for speed,  
> auto, different thresholds.  Closest to working is auto.
>
> Similar problem with C6AKQ at 32 wpm when decoding some characters  
> right.
>
> Both stations generating machine generated CW.
>
> I'm also thinking that these stations are using "contest" spacing of  
> characters which may be confounding. In WINKEY and N1MM the word  
> spacing for contest spacing is 6 dits/wordspace instead of normal 7.
>
> Admittedly these are really short exchanges and the time to lock on  
> is really short.  However, my guess is that these are the exact  
> conditions some guys are using the decoder for.
>
> A longer rag chewing K9 at 28wpm did decode OK but was not  
> spectacular. Although his signal was strong, characters were  
> dropped.  He seemed to be using normal spaced CW.
>
> I'm wondering is "contest spacing" is confounding for the decoder.
>
> 73 de Brian/K3KO
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.2221 / Virus Database: 2634/5443 - Release Date:  
> 12/07/12
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html