[Elecraft] K3 transmit and receive audio response

[Lyle Johnson]

> What I would like to know is just what the ACTUAL response curves of 
> the K3 transmit and receive audio are (when all EQ settings are set to 
> '0',

Flat means the EQ does not add or subtract to the filter response dialed 
in by the operator with the SHIFT/WIDTH/HIGH CUT/LOW CUT controls.  The 
high end and low end response will be dictated by those settings,  This 
will be modified by the impedances in the path from the radio to the 
headphones or speaker and the impedance of the headphones or speaker, or 
the characteristics of the transformers and the overall impedances in 
the LINE OUT case.

Finally, the edges of the selected passband will be rolled off by the 
action of the FIR filter windowing function applied to the filter 
coefficients.

73,

Lyle KK7P