[Elecraft] WSJT-X and K3S Tx

Charles cbjesseenh at comcast.net
Wed Sep 14 11:35:08 EDT 2016


Hi Don - I'm running on a K3S rather than a KX3 so working with the internal sound card.. 

I switched to DATA Mode and Data A but WSPR-2 shows no Rx, there is no signal apparent on the waterfall. 

BRET 

----- Original Message -----

From: "Don Wilhelm" <donwilh at embarqmail.com> 
To: "MaverickNH" <cbjesseeNH at comcast.net>, elecraft at mailman.qth.net 
Sent: Wednesday, September 14, 2016 9:23:25 AM 
Subject: Re: [Elecraft] WSJT-X and K3S Tx 

Where do you have your soundcard level set? Set it at the 75% point or 
a bit higher. 

One "eccentricity" of the KX3 is that *if* the audio input is too high 
the KX3 will protect the audio input by shutting it down. Start with the 
MIC GAIN at a low level and bring it up slowly until you find the point 
where you have 4 bars solid on the ALC meter. If the mic gain setting 
is at a rediculously low level, you can add some attenuation in the 
audio cable - 100k in series and 10k across the line at the K3 end will 
give you about a 10x reduction in input to the KX3. 

Instead of using USB mode, use DATA A - it is almost the same thing, but 
compression is automatically turned off and the equalization is 
automatically set to flat. That leaves your SSB settings intact when 
you go back to voice. 

73, 
Don W3FPR 

On 9/14/2016 9:05 AM, MaverickNH wrote: 
> I've used that in my set-up of app and rig, but no go. I might be missing 
> something simple as a K3S newbie. With USB as mode, and VOX enabled, perhaps 
> Tx is not enabled? When the app goes to Tx, or it do a Tune from the app, 
> the K3S Red TX LED comes on, but ALC doesn't budge. 
> 
> 




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