Elecraft K3 Assembly Manual - Manual (Page 60)

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Bottom Cover
Bottom Cover Description
The bottom cover is divided into two parts, the rear and forward sections. The rear section is slightly thicker
than the forward section to act more efficiently as a heat sink for the LPA transistors. The bottom covers attach
to standoffs as well as the 2D fasteners on the bottom of the RF Board. A folding tilt stand and feet are mounted
on the cover panels.
Bottom Cover Hardware Installation Procedure
Install the standoffs on the bottom of the RF board shown in Figure 83. If you installed the KPA3 shield,
three of the four standoffs required are already in place. If so, be sure to install the remaining standoff!
Figure 83. Installing Standoffs on RF Board.