QRPworks K-Board User Manual page 6


The second K-Board 3.5 mm jack, labeled "PC" is used
for transferring message/macro sets from the PC or
Mac to the K-Board using the free QRPworks Message
Management Utility. It is also used to load new
software into the K-Board. The Elecraft KXUSB or
KXSER cables should be used between this serial port
and a PC. This port must not be connected to a PC
if the Radio serial port is connected to the radio.
To KX3 / KX2 / K3 / K3S
DC in – center pin +
KX3/KX2 Settings:
To be able to enter text using your paddle on your KX3,
the KX3 firmware must be at MCU version 2.19 or later.

Menu: RS232: set to 38400.

Menu: CW Key1: set at tip-dot or tip-dash, and not
Hand. Plug your paddle directly into the Key jack on the
KX3 or KX2. The KX3 / KX2 will only decode
K-Board User Manual
To PC or Mac
Power switch (slide left to turn on)
rev 1.6 Page 6 of 37