Elecraft KRX3 - Manual (Page 41)

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If installed, attach the antenna cable connected to either the KAT3 or to the AUX RF BNC jack on the rear
panel to J92 at the end of the KRX3 as shown. This connector is angled upwards to provide clearance between
the connector and the KIO3 board when the unit is installed. Be certain the TMP connector is fully inserted in
J92. When the KRX3 module is installed the clearance between the connector and the nearby KIO3 board is
very small.
With all the TMP cables attached, lower the KRX3 module into the K3 so that the connectors on the KRX3
mate with the connectors on the SUBIN and SUBOUT interface boards (see Figure 50). The knurled nuts are
provided as handles to make holding the assembly easier. You may need to adjust the cables near the SUBOUT
board so they don’t interfere with mating the connectors. If the connection between J92 and the KAT3 is used,
form the excess cable into a loop in front of the KIO3 board.
Figure 50. Aligning the SUBIN and SUBOUT Connectors.