[Elecraft] K3 - AFSK

[Richard Ferch]

If the K3 is sending a steady carrier, by far the most likely explanation
is that it is in FSK D instead of AFSK A.

The data sub-mode is remembered per-band, so perhaps it is not set
correctly on all bands.

Another cause can be a logging program - for example, if you are using
MMTTY from within N1MM+, you have to make sure that the Mode control
setting for the mode sent to the radio is AFSK, not RTTY. RTTY in the mode
control selector in N1MM+ means FSK, and it will cause the radio to be put
into FSK D every time a QSY is commanded from N1MM+. A similar phenomenon
can occur with other logging or digital mode programs.

73,
Rich VE3KI

AJ4F wrote:

The problem we are having is intermittent transmission of data.  At times
the set up works properly and then later when transmitting the K3 sends
only a steady carrier.  It appears that the computer is outputting audio
tones to the K3 when this situation occurs.  What are the potential causes
of this problem.  Any suggestions will be appreciated.