Elecraft KPA3 Manual - Manual (Page 9)

9
K3 KIT BUILDERS: If you are installing the KPA3 as part of the initial K3 kit assembly, skip
the following steps and resume with Installing the KPAIO3 Interface Module on page 12
Remove the stiffener bar that runs from side to side across the top of the K3 chassis. This is the bar the
center three screws in the top cover thread into. The bar is held in place by a single screw at each side.
Removing the KRX3 Subreceiver Module
If your K3 is equipped with the optional KRX3 Subreceiver, you must remove the subreceiver module to install
the KPA3 shield. The KRX3 subreceiver module is the “L” shaped metal enclosure shown in Figure 3. The K3
in the figure has a fully-installed KPA3 showing how it fits next to the KRX3 module.
Remove the subreceiver module as follows:
Remove the chassis stiffener bar that runs across the top of the K3 chassis and is attached to the side panels.
Remove the two 1-1/2” (38 mm) screws and lock washers shown in Figure 3. These screws extend all the
way through the KRX3 module and secure it to standoffs mounted on the main RF board that fills the bottom of
the K3.
Figure 3. Removing the KRX3 Module.
In the following steps you will handle small TMP coaxial connectors. These are friction-
fit connectors shown in Figure 4. Handle the connectors by the grips as shown. Do not pull
on the coaxial cable.
Figure 4. TMP Coaxial Connectors.