[Elecraft] K3 DATA A vs USB for JT65/JT9

[Fred Jensen]

Can you 'splain the difference between AFSK and DATA A?  I have been 
running RTTY in AFSK using MMTTY and the sound in/out from my "radio 
laptop."  Just two stereo cables using LINE IN/OUT on the back of the 
K3, no other interface hardware.  VOX for PTT.  It seems to work fine, 
am I missing something?

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org

On 3/16/2015 7:55 PM, Don Wilhelm wrote:
> Sam,
>
> You are doing it right.
>
> DATA A mode is like SSB with the following exceptions:
> 1) TX EQ is disabled in DATA A mode
> 2) Audio compression is disabled in DATA A mode.
> 3) one can set the audio input to LINE IN for DATA A mode - no need to
> change it from MIC audio when using data modes.