[Elecraft] Digital Modes and K3S

[Jim Brown]

On Wed,9/16/2015 2:20 PM, Bob McGraw - K4TAX wrote:
> Are you in USB mode or TX Data mode on the radio? 

Rich is talking about RTTY, which the K3 transmits LSB. On Elecraft 
radios, use AFSK-A or FSK-D for RTTY, which, I believe, also bypasses 
the COMP, and sets EQ to a fixed high pass filter with a cutoff in the 
range of 300 Hz.

For all other data modes, use DATA-A, which puts you in USB mode, with 
COMP off and EQ bypassed or in HPF mode.

Also, the K3 runs ALL digital modes including RTTY just fine with VOX. 
I've never used FSK or PTT. Simplifies things a lot.

Rich -- have you turned on the MON so you can hear the audio fed to the 
TX? Do you hear anything? Are you using VOX or PTT? If VOX, play with 
VOX GAIN (single push menu) and audio gain (in all digital modes, the 
Mic Gain becomes Line In gain).

Do you see any indication of ALC? You should, and 4-5 bars is where you 
want to be. Crank VOX and Line In gain. I've got K3s, not K3S, so can't 
help with USB issues. BUT -- is it possible Windoze is messing with your 
USB port assignments and/or audio switching?

OH -- one other thought. RTTY Baud rate must match in the radio and the 
computer. Long Push the AFX knob (Data Mode) to see and cycle through 
the RTTY rates.

These are all things I've had happen to me. :)

73, Jim K9YC