[Elecraft] KX3 setting up digital

[Bill Frantz]

I had to set up my KX3 for digital operation with a SignaLink 
USB from scratch again, and I had to learn the same "features" 
which tripped me up the last time over again the hard way. I'm 
documenting them here in hopes I won't forget them the next 
time. (I'm also writing them on a file card to keep with the radio.)

(1) High levels of Mic input show up as zero signal. The fix is 
to always start from 0 and move slowly up in levels. Mic level 5 
seems to be about right for my setup.

(2) You can't be in a digital mode (DATA A etc.) and turn off 
mic bias. All you get is N/A. It seems to be a poor idea to DC 
bias the isolation transformers in the SignaLink, so you really 
need it off. And of course, voice modes won't work until you 
turn mic bias back on again.

In an ideal world, the level, bias, and VOX settings would be 
saved separately for Data and Voice modes. (And the radio would 
recognize that mic input settings need to be made in data modes.)

But the results are worth it. From New Hampshire, I've been able 
to work 14 DXCCs including an ATNO. I also had a long rag chew 
with AE5ZA in Texas, all on 20M PSK31/63 with only a few hours 
of operating.

73 Bill AE6JV

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