Elecraft KRX3 User Manual download pdf (Page 37)

Place the battery cover on BT1 on the K3 RF board as shown in Figure 44. Hint: gently squeeze the narrow

ends of the cover to make the sides bow outward to fit over the battery clip more easily. The cover is held in

place by friction against the battery holder and will be trapped under the KRX3 enclosure.

Figure 44. Installing the Battery Cover

Remove jumper W4 from connector J64A on the K3 RF board. J64A is near the KIO3 board as shown in

Figure 45. On some older RF boards, W4 is a jumper soldered between two pads on the board itself. If your

board has a hard-wired jumper, cut it with diagonal cutters and completely remove the ends so they cannot short

to the ground plane or nearby pads. If you ever want to operate your K3 with the KRX3 subreceiver removed,

make up a jumper and insert it in J64A as shown in the figure.

Figure 45. Jumper W4 on the K3 RF Board.

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Elecraft KRX3 User Manual Page 37