[Elecraft] Using a SignaLink SL-1+ with a K3

[Don Wilhelm]

Carl,

Check your SignaLink configuration (see the SignaLink documentation) to 
be certain it is set for Line output rather than Mic level output - you 
should not have to set your soundcard level to the maximum.

Note on the K3, you must drive the audio sufficiently to produce 4 bars 
solid on the ALC meter with the 5th bar flickering if you are to be able 
to control power output level properly with the power knob.  Normal Line 
levels can do that easily, but mic levels will not allow that to happen.

Note carefully that while you may have been instructed with prior rigs 
to set for maximum power and adjust the audio for the power desired, 
that does *not* work with the K3, and will result in "power creep".  
Adjust the audio as instructed in the manual (4 bars on the ALC meter 
with the 5th bar flickering) and adjust to the desired power level with 
the power knob.  The K3 power control is different than most all other 
transceivers in that it uses a closed loop and will attempt to adjust 
the power level to that requested by the power knob regardless of the 
audio drive.

73,
Don W3FPR
On 2/15/2014 6:14 PM, Carl Yaffey wrote:
> I’ve used a SignaLink SL-1+ for years with an Icom 756PROIII and a laptop.
> After getting my K3 up and running I decided to try hooking up the SIgnaLink. I bought the cable that connects it to the line in and line out and PTT connectors of the K3. It seems to work OK except that there didn’t seem to be much audio getting into the K3’s line in. Yes, I turned off the mic input and turned on line in. Yes, I maxed the laptop’s audio out. Finally, So, as an experiment, I ran the laptop’s audio out into a pair of PC speakers and ran the headphone output of the PC speakers into the K3. Lots more audio out of the speakers and I can now get plenty into the K3. I suppose the problem was just that the K3 needs more juice into line in than my Icom needed. Oh, well. Live and learn.
>
> Carl Yaffey  K8NU
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