[Elecraft] [K3] CONFIG 2 Tone

[lyle johnson]

> ...With 2 TONE turned ON the MIC control becomes TN1 which can 
>be adjusted to plus or minus parameters that displays in the VFO B area.  I 
>believe this increases the amplitude of tone #1.  Tone #1 is presently set at 
>0.  What control increases the amplitude of tone #2?  Why are my sidebands 
>showing such a difference in power?

The reason for allowing the adjustment of one tone relative to the other is to 
allow you to achieve perfect balance between the two tones for IMD testing. 
 The reason for the possible slight difference in tone amplitude, or twist, is 
due to ripple in the roofing filter and/or the Tx mixer crystal filter.

You can observe this on an oscilloscope, and even more easily on a spectrum 
analyzer.  The assumption is that you are observing the output this way, since 
that is the most practical way to measure IMD.

73,

Lyle KK7P