Re: What is status on tuning noise on KX3?

[wayne burdick]

Hi Paul,

As we speak, we're testing an experimental hardware fix that appears to be very effective, eliminating the need for RX NR and/or RX SHFT in most cases. If you'd like to try this change, please email customer support and we'll send you the instructions. It involves a minor modification to the KXFL3 module.

Thanks,
Wayne
N6KR


"Paul" <[hidden email]> wrote:

> I googled KX3 Tuning Noise and saw a few reports in late 2012. There was a comment in very early release notes that it would be fixed. I just updated the firmware to 1.50 and it is still there.
>
> There were some work-arounds suggested in late 2012, but not without cost - that is, invoking the workaround disable some other features (dual watch).
>
> Did I miss a step or is there a "fix" that doesn't result in disabling other features?



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[Oliver Dröse]

Hi Wayne,

how will that help people without the roofing filter?

I've got one in mine and suffer tremendously from tuning noise :-( But a
friend has one without the roofer and has the same problems although not as
poor as on mine. But still VFO NR and 8 kHz shift does not fix it all ...

73, Olli - DH8BQA



----- Original Message -----
From: "Wayne Burdick" <[hidden email]>
To: <[hidden email]>; <[hidden email]>; "Elecraft Reflector"
<[hidden email]>
Sent: Wednesday, June 26, 2013 2:19 AM
Subject: Re: [Elecraft] What is status on tuning noise on KX3?

> Hi Paul,
>
> As we speak, we're testing an experimental hardware fix that appears to be
> very effective, eliminating the need for RX NR and/or RX SHFT in most
> cases. If you'd like to try this change, please email customer support and
> we'll send you the instructions. It involves a minor modification to the
> KXFL3 module.
>
> Thanks,
> Wayne
> N6KR
>
>
> "Paul" <[hidden email]> wrote:
>
>> I googled KX3 Tuning Noise and saw a few reports in late 2012. There was
>> a comment in very early release notes that it would be fixed. I just
>> updated the firmware to 1.50 and it is still there.
>>
>> There were some work-arounds suggested in late 2012, but not without
>> cost - that is, invoking the workaround disable some other features (dual
>> watch).
>>
>> Did I miss a step or is there a "fix" that doesn't result in disabling
>> other features?
>
>
>
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[wayne burdick]

Oliver Dröse <[hidden email]> wrote:

> Hi Wayne,
>
> how will that help people without the roofing filter?
>
> I've got one in mine and suffer tremendously from tuning noise :-( But a friend has one without the roofer and has the same problems although not as poor as on mine. But still VFO NR and 8 kHz shift does not fix it all …

This is unusual, Oliver. In my experience, most KX3s without a KXFL3 have negligible VFO tuning noise, even on 6 meters, and for those that have more, the menu settings are usually very effective. Your friend could contact customer support for further ideas; for example they could explain how to use the built-in AF voltmeter function to quantify the amount of noise to see if it's unusually high.

Since you have a KXFL3, you may want to try the mod (after we publish the instructions, hopefully very soon).

73,
Wayne
N6KR


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