[Elecraft] K3 original - ALC erratic

[Bob McGraw K4TAX]

Set the TX value in the application to something other than 1500 Hz.   
Just change it in the TX window located to the left of the "Hold TX 
Freq" box.   I use 1550 Hz to start.

In  working stations, that number will change depending on where in the 
audio spectrum the station is transmitting.   Once I set the levels from 
the computer, the WSJT PWR value and the radio Line Gain value, I'm good 
to go for all contacts on any part of the audio spectrum.   Even if the 
station comes up on 1500 Hz, the ALC is correct while the display may be 
pulsing, indicating otherwise.   Just ignore it.

73

Bob, K4TAX



On 9/16/2019 10:04 AM, Kenneth Moorman wrote:
> Bob,
>
> How do you change the TUNE frequency in WSTJ?  I am seeing what you mention below with my K3 and would like to use a different frequency other than the default of 1500 Hz.  Thanks.
>
> Ken, NU4I
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bob McGraw K4TAX
> Sent: Monday, September 16, 2019 8:09 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 original - ALC erratic
>
> With my K3S I do find there is a relationship or interaction with the scan rate of the ALC display and the frequency of the tone supplied by FT-8.   Specifically 1500 Hz will appear to have fluctuating ALC display while the actual level is not changing. By setting the tone, TUNE is a good application to do this, to some value higher or lower than 1500 Hz will eliminate the display fluctuations.   WSJT defaults to 1500 Hz for TUNE mode.
>
> Also if the Line Gain set via the MIC level control is less than 25 or so, the granularity of the adjustment becomes critical.   It is suggested to lower the PWR slider on the WSJT application and raise the value for the Line Gain to some value between 30 and 40.  This also applies to the value of SPKR level from the computer.  Again typically
> 30 to 40 are good values giving smooth level resolution and changes.
>
> 73
>
> Bob, K4TAX
>
>
> On 9/15/2019 10:28 PM, David Bunte wrote:
>> Jim -
>>
>> I have no answer, but mine has always been extremely critical. I can
>> set it for 4 bars... and it won't budge... but I can't set it for the
>> 5th bar blinking... it goes from 4 solid to 5 solid no matter how much
>> I play with the various level controls. I don't do a lot of digital
>> work, so I am not really too concerned. There may be something I am
>> missing, but I just leave it at 4 bars and hope for the best.
>>
>> Dave - K9FN
>>
>> On Sun, Sep 15, 2019 at 11:25 PM Jim Miller <JimMiller at stl-online.net>
>> wrote:
>>
>>> K3 original - ALC erratic
>>>
>>> Noticeable on digital mode(s?) (FT8).  The ALC  - set at 4 solid and
>>> 5th flashing - is far more critical than I remember. Seems like I
>>> could easily set it exactly where I wanted it and it would stay there.  Now not so.
>>> Just wondering what can affect the adjustment to where it will drop
>>> to 2 bars sometimes and the small change of the "mic" gain will make
>>> it higher than wanted.  Not sure it is a continuous condition.  Just
>>> far more critical than usual.
>>>
>>> Thanks, Jim KG0KP
>>>
>>>
>>>
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