[Elecraft] K3 Audio

[Joe Subich, W4TV]

 > Is there some adjustment I’m missing?

Try adjusting the center frequency (shift) or decreasing the Low Cut
(FL) and High Cut (FH) by similar amounts.  In general, the important
spectrum for speech is 400 - 2200 Hz while simply "dialing down" the
width causes the Low Cut to raise too quickly.

The K3/K3S nominal 2.8 KHz bandwidth is set at 100 - 2900 (FC = 1500).
Simply dialing the width down to 1.8 KHz results in a passband of
600 - 2400 Hz (FC remains 1500 Hz).  Adjusting FC down to 1250 or 1300
Hz will greatly improve the "clarity" of SSB.

In addition, the K3 has a flat audio response while most rigs have a
slight raising characteristic (about 3 dB/octave).  You can emulate
that response using the RX EQ.  Set 0.05 = -16, 0.10= -16, 0.20= -6,
0.40= 0, 0.80= +3, 1.60= +6, 2.40= +8, 3.20= +9 and the audio will
emulate "other rigs".  You can also set 3.20 to -6 to minimize high
frequency noise.

73,

    ... Joe, W4TV


On 10/18/2017 8:07 PM, K4MWB at ARRL.net wrote:
> I’ve found the audio with narrow filtering is much “clearer” to my ears (using a Heil headset) on my Kenwood TS480 than on my K3. I spoke with another person who owns both radios and he finds the Kenwood audio crisper, less “mushy.”   My K3 is a great radio, but I’d sure like to hear better. Is there some adjustment I’m missing?
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