[Elecraft] W2IHY 8 band equalizer and EQ Plus

[Tom W8JI]

 > It is VERY well known that the most important octave 
bands for
 > speech intelligibilty are the octave bands centered on 
1,000 Hz
 > and 2,000 Hz. Those bands range means from about 720 Hz 
to about
 > 2.8 kHz. The 500 Hz is next most important (extending 
down to
 > about 350 Hz), followed by the 4000 Hz octave band.

Case in point? Just yesterday on 40 meters an S9 station 
with all that wonderful bass called me, and I had to adjust 
the shift lower (to cut bass response with the K3) and 
narrow the filter to be able to understand him through 
background noise that was several S units weaker than him. A 
friend in Australia with normal communications audio was a 
bit weaker, but much better copy. All that bass power 
wasted, being transmitted just to be filtered and discarded 
at the receiver. :-)