[Elecraft] KX3 WSJT-X OS X

Matt VK2RQ matt.vk2rq at gmail.com
Tue Sep 3 16:24:12 EDT 2013


You're probably overdriving the mic level input on the radio -- you probably don't need any more than mic gain 4 or 5 on the KX3.

73, Matt VK2RQ

On 04/09/2013, at 5:06 AM, Bob <bob at kalkwarf.com> wrote:

> 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
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