[Elecraft] KX3 + fldigi (PSK31)

[Bob McGraw - K4TAX]

Item 1. - Go to Config menu then Waterfall menu and then FFT.  Set the 
limit values to 100 Hz Lower Limit and 3000 Hz Upper Limit.

Item 2. - As to TX hanging, I suspect the audio level out of the 
computer is too high, thus the residual noise from the computer is 
tripping the VOX in the SignaLink USB.  I suggest operating the Windows 
Sound mixer as such level the SignaLink PTT LED comes on and is stable. 
   Usually less than 50%.    From there adjust the TX Level on the 
SignaLink to get the proper drive to the radio.  In general the TX Level 
on the SignaLink should be about 9 o'clock to 12 o'clock position.  Then 
adjust the gain on the radio to get 4 bars indicated on the ALC scale 
with the 5th bar flickering.

Item 3. - Basically NO.   Go to Config menu then Waterfall menu and then 
Transmit and set the Transmit Signal level to about 0.25 to 0.5.  If you 
see issues there, then likely audio to the radio is too high or the 
computer sound card is being over driven.

Item 4. - Also open the Rig Control panel and make sure that both PTT 
Tone on Right Channel is not checked and that Use Separate Serial Port 
for PTT is not checked.  The SignaLink will supply a PTT command to the 
radio from the internal VOX operation.  Also be sure VOX on the radio is 
off.


73
Bob, K4TAX

  

On 10/15/2015 10:43 AM, Kyle Krieg wrote:
> Hello all. I've looked through the help topics and didn't see my issue
> asked or resolved, so I'll ask it here, as I'm a digital newbie...
>
> Using up to date fldigi on a Windows Vista laptop.  Signalink USB modem.
> KX3.  Hamlib for rig control within fldigi.
>
> I hook everything up, put the radio in DATA A mode and follow the
> instructions on this webpage
> https://k4mtx.wordpress.com/2013/04/11/kx3-fldigi-setup/
>
> My questions are
>
> 1) I don't see the whole 3khz waterfall.  My filters are wide open, but
> there is around 750hz missing towards the bottom of my waterfall.  Is that
> normal?  My waterfall ends abruptly at 3khz, so I know it's working and I'm
> able to see other stations transmitting and it's decoding on fldigi.
>
> 2) When I transmit, I'm not able to adjust my ALC, which in the webpage
> above, I should be able to adjust that? It looks like that option is turned
> off in Data A mode?
>
> 3) Should my transmit signal be spilling out of my yellow bars when I
> transmit, or am I over driving my signal?
>
> 4) After I get done transmitting (audible tones), it hangs with the TX red
> light on and does not automatically go into receive mode.  I have to hit my
> XMIT button to return to receive.  Then I can see my waterfall.  I've
> checked my macros and they all end with <RX>.  I'm sure there is a setting
> I'm not seeing.