[Elecraft] tx eq for K3

[Lyle Johnson]

> i discovered some days ago a significant delay in the TX SSB Monitor.
> I turned all TX EQ setting to 0 and hoped the delay will be smaller,
> but no effect for my ears...

Changing Tx EQ settings has no effect on delay.

The Tx Monitor audio in the K3 is taken from the 15 kHz IF in the DSP, 
after all processing has occurred.  There are several milliseconds of 
overall delay in the path from the microphone to the speaker.

The delay is entirely in the required filters, not in the speed of the 
DSP or the means used to transfer the samples.

Tx Monitor audio could be taken just from the audio path in the DSP, but 
then you would not be able to hear the effect of compression, for 
example.  We decided it was best to be able to hear the effects of all 
user-adjustable settings which might affect the transmit audio.

73,

Lyle KK7P