Elecraft KRX3 User Manual download pdf (Page 36)

Place a 7/8” (22 mm) unthreaded sleeve over each of the long screws so they rest against the top of the

circuit board (see Figure 42), then place the top cover over the assembly and adjust its position so the edge of

the top fits inside the bottom and rests against the KRX3 main board on all sides. The long screws will pass

through holes in the top cover. Secure the top with knurled nuts tightened only enough to hold the cover in place

so it isn’t loose.

Figure 42. Installing the Shield Top.

Installing the KRX3 Subreceiver Module

If you haven’t removed it already, remove the chassis stiffener bar. The stiffener is shown in Figure 7.

The exposed rim of Battery BT1 on the K3 main RF board must be insulated to prevent shorting against the

bottom of the KRX3 enclosure. A plastic battery cover is provided. Fold the battery cover as shown in Figure

43. Pinch the creases to set the bends to form a rectangular box with one open end, then wrap the cover with thin

transparent tape such as Scotch



Magic

mending tape (see Figure 44). The tape ensures the cover holds its

shape over time.

Figure 43. Folding the Battery Cover.

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Elecraft KRX3 User Manual Page 36