[Elecraft] K3 ACL setting for PSK31

[Don Wilhelm]

Haines,

To adjust the audio gain, you set the K3 into TX TEST mode (hold the 
MODE^ button), not TUNE.  TX TEST allows you to adjust the transmit 
controls without actually transmitting RF.

Check to be certain your soundcard is actually producing audio - check 
the soundcard controls in your computer as well as the input gain 
control in the K3.  Turn the MONitor volume up and you should hear the 
tones in the K3 speaker.  Be certain the K3 MIC SEL menu item is set for 
the input that you actually have the audio  plugged into (LINE IN, Front 
panel mic jack, or Rear panel mic jack).

The K3 TUNE button places the K3 into CW transmit state and emits RF at 
the level preset in the menu.  It is entirely different than TX TEST.

On your filter problem - read the manual again and be certain your 
filters are set up correctly.  You must select the 2.7/2.8 kHz filter 
for data transmit.  On receive you may use any roofing filter and DSP 
combination that you choose.  The waterfall will only show those signals 
that pass through to the audio, so even if you have the 2.7/2.8 roofing 
filter selected if your DSP filtering (width/shift or Hi-Cut/Lo-Cut 
knobs) is set for a narrow passband, that is all that will show up on 
the waterfall display.  I like my DSP filtering set for a 400 Hz width 
with a center frequency of 1.50 kHz, so I tune near the desired signal 
with the VFO knob and then click on it in the waterfall display to tune 
precisely - YMMV,  If you desire something different, you may set the 
values you prefer, the K3 allows you to do that.

73,
Don W3FPR

Haines Brown wrote:
> ---snip---
>
> Here I'm stumped. My directions for setting ALC in general are
> different than setting it for DATA and nothing for DATA speaks of
> putting the K3 in to TUNE mode.
>
> When I do hold the TUNE button to enter TX TEST mode, my display shows
> that I'm set for about 20 Watts and that I'm using FL2 (the 400 Hz)
> filter, but now the mode on the display has changed to CW. If I exit
> TUNE, I'm jumped back to DATA mode. While in CW, the ALC reads 7 bars,
> which is too much for DATA. 
>
> When I do software TUNE in my fldigi, while in the K3 DATA mode,
> there's nothing registered on the ALC scale.  
>
>   
>