[Elecraft] KX3 firmware update (12-kHz audio spur fixed, etc.)

[Leroy]

I have a huge improvement in the Weaver demod. I did not use it before.  The 
auto tune memories improvement is also a great upgrade.
Thank you Wayne and Elecraft team for continuing to make the KX3  the most 
remarkable QRP radio ever.

               Leroy AB7CE

-----Original Message----- 
From: Wayne Burdick
Sent: Sunday, August 18, 2013 6:05 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] KX3 firmware update (12-kHz audio spur fixed, etc.)

I just confirmed that the opposite-sideband image is way down. I believe 
John was hearing the effect of the notch at 1500 Hz, which is a 
characteristic of Weaver demodulation. When you inject a carrier and sweep 
through the SSB passband, the existence of the notch can make it appear that 
you're hearing both desired and image signals -- but what you're really 
hearing is just the tone at different pitches on either side of the notch.

73,
Wayne
N6KR


>
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Wayne Burdick
> Sent: Sunday, August 18, 2013 6:19 PM
> To: John_N1JM
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] KX3 firmware update (12-kHz audio spur fixed, 
> etc.)
>
> Interesting. Well, I and a number of other testers have noted better
> fidelity, and the op who had measured the in-band OSB image at 20 dB
> reported that it had dropped significantly.
>
> I've been listening to music in the AM broadcast band in SSB mode with FL2
> engaged, and it sounds quite clean.
>
> 73,
> Wayne
> N6KR
>
>
> On Aug 18, 2013, at 4:03 PM, John_N1JM <johnn1jm at gmail.com> wrote:
>
>> No improvement here that I can detect in the weaver demod fix.
>> 73,John N1JM
>>

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