[Elecraft] K3 set up for RTTY and PSK

[Richard Ferch]

Rich,

Have you tried reducing the VOX sensitivity (MAIN:VOX GN)? The output 
from your sound card in digital modes should be high enough to give you 
4-5 bars on the K3's ALC meter, which should leave you with plenty of 
headroom to set the VOX sensitivity below the digital audio and above 
the sound card's noise level.

Could it be Windows sounds that are triggering the VOX? If so, you need 
to disable them.

If the VOX is triggering with no output from your digital mode software 
and no Windows sounds, perhaps it is triggering on noise from the 
microphone. Can you disable the sound card's microphone input when you 
are using digital modes? Or, if that is not feasible, can you reduce the 
sound card's microphone input level enough to avoid spurious triggering 
while still leaving the wav input high enough to give you the desired 
4-5 bars of ALC meter reading in digital modes?

If none of these suggestions work, perhaps you will need to consider 
using PTT.

73,
Rich VE3KI

W3ACO wrote:

> I seem to have a problem setting up my K3 for PSK and RTTY.  I use a
> computer with mike input and headphone output to connect to line out and
> line in of the K3.  I have the K3 set for VOX.   Intermittently, the K3 goes
> into transmit mode without sending tones from the computer.    If I turn
> down the mike gain (set at 8) the problem goes away, but then I don't get
> audio into the radio.  What am I doing wrong ??
>