Re: K3S Kit issue - Does not transmit in SSB

Posted by Don Wilhelm on Jul 31, 2017; 5:26pm
URL: http://elecraft.85.s1.nabble.com/K3S-Kit-issue-Does-not-transmit-in-SSB-tp7632922p7632925.html

Etienne,

A frequent problem is that the Bias is not turned on when using the MH2
microphone.  It is an electret microphone and needs bias to produce audio.

As for your DATA mode operation, are you using DATA A mode?  You should be.
Do you have the mic select set to Line IN?  If not, that can be the
problem.  Do you have anything plugged into the K3S Line IN jack?  That
overrides the Line IN for the internal soundcard.
Do you get any indication on the ALC meter - you should set the audio so
you have 4 bars solid with the 5th bar flickering.  You may need to
adjust both the computer soundcard speaker or line Out sliders and the
K3S mic gain (actually Line IN).

73,
Don W3FPR

On 7/31/2017 1:11 PM, VE8EM wrote:

> Good day,
>
> I am adressing this issue to this forum as I am puzzled and don't know what
> to do.
>
> Basically, I assembled my K3S kit about a month ago, no issues with the
> build and initial testing. I have done all of the required calibration and
> even the RF Gain calibration using the XG3 signal generator.
>
> Everything worked out fine, I was able to receive signals and hooking up my
> paddle I was able to transmit in CW. Since I have the TX Monitor option, I
> was able to see the signal and power output on the P3 display.  I did put
> back the radio in his box and put it aside for about a month as I was busy
> with other family issues (i.e. a new baby).
>
> I pulled back the radio last week as I wanted to play with the digital
> modes, after fiddling with the settings I was able to hook up the computer
> and the radio using the USB cable to use the internal sound card and
> control. I am able to receive signals on my computer, I can see the received
> signal on the computer display so I have no doubt that the sound card
> drivers are working. I configured the software to control the radio and when
> I start to transmit using the software, the radio turn into transmit mode
> and the TX red LED lights up.

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