Installing The K144Xv Module In The K3 - ELECRAFT K3 Installation And Operation Manual

If you have a K3/100, skip this step. If you have a K3/10 with the blank rear panel, replace it as follows:
Install the TMP cable with a BNC connector at one end on the blank panel. Remove the nut and lock
washer (if on the BNC) and thread the cable through the ANT3 hole in the panel from the side with the
ANT3 legend, then replace the lock washer and nut. Tighten the nut to hold the BNC securely.
Install the blank panel on the K3 oriented so the ANT3 connector is on the left end near the SO-239
ANT1 and (if installed) ANT2 connectors. Route the TMP end of the cable over near the KIO3 board. It
will be connected to the K144XV module later.

Installing the K144XV Module in the K3

Locate the two 6" (15.2 cm) TMP cables. One is marked near the connector at each end. Typically the
mark will be a colored band. White is used in this manual so it will show up clearly in the photographs.
Plug the cables into the two TMP connectors on the KXV3A board (see Figure 6). Note the connectors on
the KXV3A are marked IN and OUT. Be sure the marked TMP cable is in the OUT connector on the KXV3A.
The purpose of the marked cable is to positively identify the cable after the K3 side is replaced and you can no
longer see the KXV3A board. Be sure the connectors are fully seated.
Skip this step if you are not installing the K144XV Reference Oscillator Phase Lock option at this time.
Disconnect the TMP cable from J83 on the Main KSYN3 board (mounted on the front panel shield closest to
the side panel you have removed; see Figure 4, TMP Cable Connections, in the K144XV Reference
Oscillator Phase Lock Option Installation manual). Leave the other end of the cable connected to J2 on the
KREF3 board. Take the TMP cable from your K144XV Ref Lock kit and plug it into J83 on the KSYN3
board. You will plug both of these cables into K144XV after the module has been installed. Be sure to
position the cables so you can reach them after installing the K144XV module in the following steps.
Mount the left side panel on the K3. Be sure you use the side panel equipped with the holes for mounting
the K144XV module (see Figure 2). Route the two TMP cables from the KXV3 through the slot in the KIO3
board (see Figure 6) so they are not pinched between the side panel and the KIO3 circuit board.
Figure 6. Attaching TMP cables to the KXV3A Interface Board.
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