[Elecraft] KX3 WSJT-X OS X

[Bob]

Hi...Regarding WSJT-X JT-65 and JT-9 modulation of ssb with power set to 2 watts. 

The Audio is clear and the tone is pure.  I cannot get ALC to hold at 4 or 5 bars.  It blinks and then drops out.  I am using a dummy load for the antenna and MacBook Pro for audio.  Direct connect with Elecraft cables.  Changing nothing in the setup and switching to fldigi PSK31 works FB.  I am perplexed.  It seems like the narrow audio of the JT sigs won't modulate the KX3.  Anybody else doing this exercise or am I messing with the bleeding edge?  

I have tried the obviuos input levels and KX3 mic GAIN.  Tried with power set from 0 to 5 watts.  It truly feels like the JT tone is causing some kind of interaction with ALC control..

Thanks, 
73 de Bob w7wo