[Elecraft] Question about Data Modes...

[Jim Brown]

On 5/6/2014 8:53 AM, David Cole wrote:
> Thank you Jim!  Are you saying to use AFSK A for all sound card modes?

No, only for sound card RTTY.

Note also that like MMTTY, the K3 can be set for several tone frequency 
pairs. I use the lowest of them, 915/1085 Hz, because I find it easier 
to tune by ear.

Some RTTY folks don't recommend this, because the second and third 
harmonic can get through the TX filter. What they fail to realize is 
that the same mechanism that creates harmonic distortion also creates 
intermod distortion. So careful level setting throughout both the audio 
and RF chain are critical for all audio and data modes.

73, Jim K9YC