[Elecraft] K3 digital mode audio input via LINE IN

[Brian Machesney]

I can't get the K3 to transmit using audio supplied to the LINE IN jack. I'm
working in DATA A mode. I CAN transmit with audio supplied to both the
front- and rear-panel MIC jacks. I have tried selecting the main MENU MIC
SEL = LINE IN as well as the MIC+LIN = ON setting, but no go. Any
suggestions as to what I've forgotten to set up?

73 -- Brian -- K1LI