[Elecraft] K3 CONFIG LIN OUT

Lyle Johnson kk7p at wavecable.com
Thu Apr 3 13:21:02 EST 2008


> 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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