Anybody know just what the voltage range can be put out at the line out jack?
Since it is pre-AGC it isn't a "constant level" output but instead varies
with signal strength.  CONFIG LIN OUT apparently adjusts the level.

It is in fact post-AGC. CONFIG LIN OUT adjusts the gain of the post-AGC amplifier that drives LINE OUT.

Most claims of "constant level" output are actually "fixed gain after AGC", same as the K3.

Your specific case of 1.7 V RMS is 4.8V p-p. The driver for the LINE OUT output operates from a 3.3V supply, so it probably will not overdrive your external device in any case.

73,

Lyle KK7P

(You can measure the output with a multimeter in your particular setup for your particular AGC and other settings.)

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