[Elecraft] K3 - DATA mode does not TX

[Don Wilhelm]

John,

That does seem like your audio input is set for Mic level output.

With the K3, you cannot judge "sufficient audio" by the power output.  
The manual covers this situation, but here is how to set the audio level 
for data modes.
First set the K3 into TX TEST so you don't disturb other hams (or you 
could use a dummy load).
Now, increase the audio level until you see 4 bars solid with the 5th 
bar blinking on the ALC meter.
(Don't worry that you are driving the K3 into ALC - you will not be - 
ALC action is indicated by the 5th bar, those below are there to give 
you an indication of an adequate audio level).
If you cannot obtain that 5th bar just flickering with the K3 Line-in 
level control (Mic gain), then you will have to either increase the 
audio from your interface box or soundcard output.

Once you have set the audio level as above, adjust your desired power 
level with the power knob.

Failure to follow this setup will create "power creep" in your RF output 
because of the way the K3 measures and controls power.

Your APRS problem may be related, but then I really don't know.

73,
Don W3FPR

On 1/19/2013 3:51 PM, VE3NFK wrote:
> thanks for all the help guys...
>
>
> After I 'cranked' 'line' to maximum; I was able to get to 75% of full
> power...
>
> So i guess I will leave it that.
>
> Sincerely appreciate all the support
>
> - now - what am I doing wrong with my APRS 2 meter setup (previous post)
> with no answers  :-)
>
>