[Elecraft] K3 doesn't work in AFSK-A mode but DATA-A does work. What's broken?

[Jim Brown]

On 3/21/2020 10:43 AM, Bob McGraw K4TAX wrote:
> It is not necessary to use VOX if the TX command is configured correctly 
> in MMTTY.    I run MMTTY direct and do not use N1MM+ or other 
> applications.    The reason for me NOT using VOX is that I use VOX for 
> other operations and don't like having to change the VOX settings for 
> MMTTY.   Of course if one doesn't use VOX for SSB then set the values 
> for MMTTY and carry on.

I make thousands of RTTY and WSJT-X QSOs a year. For many years, I've 
used nothing but VOX to key my ancient K3s for SSB and all digital modes 
(RTTY and WSJT-X). Elecraft remember a lot of settings by band and mode, 
so once I've set them, levels have never been a problem for me. I'm 
using a good USB audio interface designed for semi-pro audio 
applications, a Tascam US100 (long discontinued, available at the great 
auction site). That improves decoding as compared to the built-in sound 
of many computers, but that's all it changes.

BTW -- with a K3 and no built-in USB, using VOX rather than a "pull to 
ground" PTT reduces by one the number of cables between computer and 
radio, and a second USB port in the radio.

73, Jim K9YC