[Elecraft] K3 DATA A problem

[Joe Subich, W4TV]

 > Audio is being fed from my PC to the K3's line input and I'm certain
 > that the radio is in DATA A and the Config for MIC SEL is set to LInE
 > In.

It *sounds like* you are still in AFSK A and not DATA A.  By default
AFSK A has a narrow audio filter on the input of the modulator process
(DSP) that restricts modulation to a very narrow range around the
AFSK tones (e.g. 2050-2350 Hz for 2125/2295 tones).

73,

    ... Joe, W4TV


On 2021-02-28 12:07 PM, John Simmons wrote:
> I worked the RTTY contest yesterday using AFSK with N1MM. All worked 
> fine and I shut everything down when I was done. Today I tried to 
> operate FT8 but I can not get any power output.
> 
> Audio is being fed from my PC to the K3's line input and I'm certain 
> that the radio is in DATA A and the Config for MIC SEL is set to LInE 
> In. When I hit the TUNE button in WSJT-X, the radio keys and there 
> definitely is audio input to the K3 from the PC because I can hear K3 
> monitor audio of the tone. Varying the MON level on the K3 varies the 
> FT8 tone so I'm quite certain the FT8 tone is coming into the K3. 
> However the radio doesn't put out any power and there isn't any ALC 
> indication whatsoever. I've adjusted the line in level to max and set 
> the WSJT-X "PWR" slider to max but I still can't get the radio to put 
> out any power nor any ALC indication.
> 
> I've also tried using N1MM to send AFSK RTTY as I did yesterday but I 
> still get no RF power output from the K3.
> 
> What the #$^%&^ am I missing?
>