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

[Steve Ellington]

I'm enjoying listening to an AM roundtable on 3885 tonight. With syncAM I 
don't miss a single word! I leave the CWT on and the K3 automatically 
corrects frequency as each OP takes his turn. Thanks Elecraft!
Can you explain the blinking S? I assume it blinks until the PLL locks with 
the carrier. I see it go off/on at times. Maybe the station is drifting or 
there's QRN? What should we be looking for?
Steve
N4LQ
N4LQ at carolina.rr.com
----- Original Message ----- 
From: "Joe Subich, W4TV" <lists at subich.com>
To: "'Jack Smith'" <jack.smith at cliftonlaboratories.com>
Cc: <Elecraft at mailman.qth.net>
Sent: Thursday, November 12, 2009 8:25 PM
Subject: Re: [Elecraft] [Elecraft_K3] K3 Beta FirmwareRev. 3.57: Synchronous 
AM Detection (AM-S); misc. improvements


>
> 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
>> >>>
>> >>>
>> >>>
>> >> ______________________________________________________________
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>> >>
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>> >>
>> >
>> > ______________________________________________________________
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>> >
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>> >
>> >
>
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