[Elecraft] KX3 audible keying artifacts during CW keying (with headphones)

[Wayne Burdick]

Hi Jim,

This is something we hope to minimize in a future firmware release. Meanwhile, here are some things you can try:

- cut the lowest 3 audio receive equalization bands by a significant amount in CW mode (RX EQ menu entry)
- reduce the receiver's DSP bandwidth in CW mode (try 100-300 Hz)
- use a non-zero QSK delay
- turn on the noise blanker and setting it to a low level
- turn on the noise reduction and setting it to a low level
- use headphones with less bass response

The T/R artifact you're hearing is usually a result of using headphones with extremely low bass response in combination with one or more of the following:  low supply voltage, high transmit current into a low-Z load, and very high band noise.

73,
Wayne
N6KR