[Elecraft] Making K3 RX audio like K2

[Lyle Johnson]

Hello Bill!

> I like the sound of the RX audio of my K2 with the KAF2 filter better than my
> K3.  It has less hiss and just sounds better - at least to my crummy ears.. 
> I have played around some with the RX equalizer in the K3 and have improved
> it some but has anyone had time to really find out what settings will best
> mirror the K2 with the KAF2?

The K3 is a very different radio than the K2, and some of this will be 
reflected in a different character in its sound.

The KAF2 uses analog filters with feedback to provide narrower 
bandwidths, and includes an L/C low pass filter to suppress hiss and 
other high-frequency noises.

In general, the K3 DSP filters are sharper than those of the K2 w/KAF2. 
  One way to get some of the feel might be to use the PB feature in CW 
mode.  This lets you adjust a wider, underlying filter which may restore 
a little of the audio you've become accustomed to in the K2.

If you have exceptional high frequency hearing, you might want to 
consider headphones (or speakers/amplified speakers) with some high 
frequency roll off.

Activation of NR with a setting of F1-1 or F1-2 may also help tailor the 
sound a bit more to that of the K2.

In the end, though, the K3 has its own unique characteristics.  I hope 
you grow to enjoy them as much as you do those of your venerable K2 /KAF2.

73,

Lyle KK7P

(whose K2s are getting very dusty...)