[Elecraft] [Elecraft_K3] New K3 Beta Release: APF for CW, "Fast Monitor" & improved TX gate for voice modes

[JAMES ROGERS]

I confirm here as well Nate.

73s Jim, W4ATK
On Nov 6, 2010, at 8:22 AM, Nate Bargmann wrote:

> * On 2010 06 Nov 06:15 -0500, dalej wrote:
>> I just loaded this beta version 4.18 and now I get loud crackling  
>> from the speaker when tuning though the APF filter, also, the audio  
>> goes away.  I uploaded the firmware though the P3 twice, once power  
>> on P3 and the second time power off with the same results.  I will  
>> next try loading the firmware directly into the K3.  If I have the  
>> same result, I will then revert back to the previous version, beta  
>> 4.17, which worked fine including the power out.
>
> I take it you are tuning the APF with the SHIFT control?
>
> Ouch!  I just replicated your issue on my K3!  Once I tuned the APF
> above 1 kHz the crackling begins.  During this time the APF function
> disappears and with each step on the display a loud CRACK! is heard in
> the speaker.  Once I tune the APF below 270 Hz the CRACK! goes away  
> and
> the APF is restored.
>
> At 1 kHz I hear a loud POP! and then the CRACK! occurs for each step  
> as
> the knob is advanced to the right although the displayed APF frequency
> remains at 1 kHz.  At 270 Hz I hear a BOOP! and APF is restored.  I've
> done this several times as I've typed this message.  When the APF is  
> in
> the crackle mode, turning it off and then on does not change the  
> crackle
> state, in fact more crackle is heard upon reactivation.  Powering off
> the K3 while in "crackle" mode kills the crackle and APF resumes its
> function.
>
> I am running MCU 4.18, DSP 2.67, and FPF 1.14 on K3 #4762.
>
> HTH,
>
> 73, de Nate >>
>
> -- 
>
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JIM ROGERS
w4atk at bellsouth.net
http://web.me.com/jimrogers_w4atk