[Elecraft] ALC on line in?

[Joe Subich, W4TV]

ALC display is independent of audio input (front mic, rear mic or
line in).  Press [hold] the DISP/METER button to toggle between
CMP/ALC and SWR/PWR displays.

> Trying WSJT-X , DATA-A mode, and while I have power out, no ALC is
 > displayed, and I’m concerned about overdriving

JT modes are AFSK - one tone at a time with phase continuous, zero
crossing transitions.  They are designed for operation with class C
(saturated) amplifiers so unless you overdrive the mic preamp and
cause clipping before the mic gain control in most transceivers it
is nearly impossible to create distortion.

That said, simply adjust the audio input level for *four bars* on
the ALC scale *as documented in the K3/K3S Owners Manual* (using
a combination of the Windows Mixer output for your soundcard, the
output level control (if any) on your interface and the MIC Gain
encoder on the K3/K3S) for any digital mode.

73,

    ... Joe, W4TV


On 1/22/2017 9:39 AM, Jamie WW3S wrote:
> Is it possible to display ALC while using the line in jack on the rear panel? Trying WSJT-X , DATA-A mode, and while I have power out, no ALC is displayed, and I’m concerned about overdriving.....
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