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To enable text decode and paddle/keyboard transmit:
• select PSK (PSK31/PSK63) or FSK (RTTY) mode on either the main or
sub receiver (or both)
• tap <MAIN RX> or <SUB RX>, then tap <TEXT DECODE>
• select 1 or 3 lines of receive text
The K4 will decode PSK or FSK from both receivers simultaneously,
using separate windows, if both are configured for text decode. You
can also decode CW from one receiver while decoding PSK or FSK on
from the other.
Characters sent with the keyer paddle or an attached keyboard will
appear on the text decoder's TX line. You can also use the CW
message memories, [M1]-[M4], to send text.
Data Mode Connections
The K4 provides a rich set of I/O connections for use with computer-
based data modes, including analog LINE IN/LINE OUT (LINE
IN and LINE OUT jacks) and remote control/digital data interfaces
(USB, RS-232, and ACC).
For general information on setting up these ports for data
input/output, see TX and MAIN RX primary functions.
Selecting a Data Mode
Audio-based data communications (via LINE IN/LINE OUT or USB
soundcard) can be done using LSB or USB mode. However, DATA and
AFSK modes offer several benefits not available in SSB modes (see
below).
Note: If you prefer to use LSB or USB for audio data, you’ll need to
manually set CMP to 0 to prevent data signal distortion. Refer to your
data communications software manual to determine how to set up
the VFO and computer for accurate frequency display.
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