[Elecraft] [Elecraft_K3] K3 Beta Firmware Rev. 3.57: Synchronous AM Detection (AM-S); misc. improvements

[Joe Subich, W4TV]

After more listening tonight (this is WWV on 10 MHz), the problem 
papers to be an unacceptable level of FM!  At times WWV is as easy 
to copy using the K3's FM detector as it is with either of the AM  
detectors. 

73, 

   ... Joe, W4TV 
 




> -----Original Message-----
> From: Jack Smith [mailto:jack.smith at cliftonlaboratories.com] 
> Sent: Thursday, November 12, 2009 1:05 PM
> To: lists at subich.com
> Cc: 'drewko'; Elecraft at mailman.qth.net
> Subject: Re: [Elecraft] [Elecraft_K3] K3 Beta Firmware Rev. 
> 3.57: Synchronous AM Detection (AM-S); misc. improvements
> 
> 
> Joe:
> 
> Could WWV/WWVH's 100 Hz time code subcarrier be part of the problem?
> 
> Jack
> 
> 
> Joe Subich, W4TV wrote:
> > I also notice that the tracking will lock up anywhere +/-
> > 25 cycles of nominal.  I've heard one case where AM sync 
> > did not sound particularly good ... that's with some of 
> > the metrological voice broadcasts on WWV/WWVH. Still that 
> > appears to be a case where the sync AM is amplifying an 
> > issue at the source because the normal envelope detector 
> > does not sound very good either. 
> >
> > 73,
> >
> >    ... Joe, W4TV
> >  
> >
> >
> >   
> >> -----Original Message-----
> >> From: elecraft-bounces at mailman.qth.net
> >> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of drewko
> >> Sent: Thursday, November 12, 2009 8:37 AM
> >> To: Elecraft at mailman.qth.net
> >> Subject: Re: [Elecraft] [Elecraft_K3] K3 Beta Firmware Rev. 
> >> 3.57: Synchronous AM Detection (AM-S); misc. improvements
> >>
> >>
> >> I also think the sync det works great. My VFO locks 4 or 5 Hz
> >> high using the 13 KHz filter. The 2.7 KHz filter locks right 
> >> on the money. Switching to the narrower filter will also lock 
> >> signals that are too weak to lock on the wide filter. Not 
> >> that you'd want to use the 2.7 filter for listening to AM 
> broadcasts. 
> >>
> >> 73,
> >> Drew
> >> AF2Z
> >>
> >>
> >> On Thu, 12 Nov 2009 03:59:38 -0600, Dale, K9VUJ wrote:
> >>
> >>     
> >>> Installed 3.57 this morning.  I am listening to Radio 
> Zealand now, 
> >>> at 0945 Z on 9765 Khz.  Sync det seems to work very well.  I'm
> >>>       
> >> trying it
> >>     
> >>> back and forth between AM and AM-S.  I am using the VFO
> >>>       
> >> tracking and
> >>     
> >>> it locked right on, but my VFO display reads 9.764.991.
> >>>       
> >> Perhaps I'll
> >>     
> >>> have to re-check calibration sometime, no biggie here.  I 
> like this
> >>> sync det.  It now makes me wish I had the 15 Khz filter in 
> >>>       
> >> addition to
> >>     
> >>> my 6 Khz. filter.
> >>>
> >>> Thankyou Elecraft for another flawless upload.  Am using 
> the Mac and 
> >>> that utility which also has been flawless here.
> >>>
> >>> 73
> >>> Dale, K9VUJ
> >>>
> >>>
> >>>       
> >> ______________________________________________________________
> >> 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
> >>     
> >
> > ______________________________________________________________
> > 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
> >
> >