http://elecraft.85.s1.nabble.com/KX1-LED-Display-Issue-tp5191558p5191853.html
No worries about that.
VERY low.
> On a new build KX1 last night I noticed that when the LED went off as
> designed, there was a faint outline of "88" in the first two digits. I
> had not noticed this prior, but it was the first time I had used the KX1
> in a very dark environment. I could set the LED to three levels as
> designed, the shut-off timer worked correctly, and I had fresh batteries
> (6 AA cells).
>
> Should I be concerned?
>
>
>
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