Elecraft K3EXREF - Manual (Page 7)

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Figure 2. Freeing the K144XV Module.
3. Unplug the coaxial cables leading to the K144XV module and set the module aside. The coaxial cables
have friction-fit TMP connectors that simply pull out of the sockets (see Figure 6 on pg 9). Pull on the
metal connector grips. Do not pull on the coaxial cable. If needed use your needle-nose pliers to grasp
the metal grips on the connectors.
Remove the K3 left side panel (the side with the handle).
Remove the plug from the REF. hole in the K3 rear panel (next to the KEY OUT connector). The plug has
keys on either side to hold it in place. Squeeze each key to release it.
Install the SMA connector in the REF. hole as shown in Figure 3. Note that the rubber grommet fits inside
the rear panel hole to center the connector.
Figure 3. Mounting the SMA connector.