[Elecraft] LIN IN level varies

[Alan Ibbetson]

Hi Bill,

That's an interesting theory but the evidence doesn't support it. If I 
turn off VOX then WJST never puts the K3 into transmit. I looked and F2 
in WJST-X has "VOX" selected under the Radio tab.

The more I mull this over the more the effect of turning the Mic pot 
down to zero and back up again to temporarily clear the fault the more I 
suspect the K3 firmware.

I've downloaded the latest microcode from electraft.com. So far this 
evening the fault has not reappeared. Time will tell.

73, Alan G3XAQ

On 10/05/2018 20:53, Bill Frantz wrote:
> The type of radio might matter for a fix for the problem.
> 
> If wsjt-x is set up to use CAT control from the computer, it
> will use CAT to set the radio into transmit mode, so the fact
> that the radio is in transmit mode doesn't mean that VOX has
> been activated. If this is the case, it is possible there is a
> problem with the sound card/cable(s).
> 
> 73 Bill AE6JV
> 
> On 5/10/18 at 2:58 AM, alan at g3xaq.net (Alan Ibbetson) wrote:
> 
>> I'm an infrequent user of data modes. I'm trying to use FT8
>> with the latest version of the WSJT-X software. Sound card
>> input is via LINE IN. I'm using DATA A mode.
>>
>> Everything works OK on transmit except that intermittently the
>> K3 output falls to zero even though the sound card audio output
>> level isn't changing. The VOX stays on, so the K3 is "hearing"
>> the audio. ALC usually but not always falls to zero from the 4
>> bars level. Even weirder, if I turn the MIC gain (LINE) down to
>> zero and back up again the output and ALC come back up to normal.
>>
>> Is this a hardware fault? A software fault? Or something even weirder? My FW REVS says
>>
>> uC 05.14
>> d1 02.83
>> d2 00.00 (no KRX3 is installed)
>> FL 01.19
>> dr 00.00
>>
>> 73. Alan G3XAQ
> -----------------------------------------------------------------------
> Bill Frantz        | "The only thing we have to   | Periwinkle
> (408)356-8506      | fear is fear itself." - FDR  | 16345
> Englewood Ave
> www.pwpconsult.com | Inaugural address, 3/4/1933  | Los Gatos,
> CA 95032
> 
> 

-- 

Alan Ibbetson
alan at g3xaq.net