Elecraft K1 User Manual

Page 36

LECRAFT

With the assembly upside-down or resting on one side, plug the

front panel assembly into the RF board (Figure 6-13). Connector J1
on the bottom of the front panel PC board mates with P1 on the
bottom of the RF board (indicated by an arrow below).

Figure 6-13

Secure the front panel to the side panels and RF board using two

flat-head and two pan-head 3/16" (4.8 mm) screws. Flat-head
screws are used on the top, and pan-head on the bottom. You may
need to adjust the 2-D fasteners slightly, then re-tighten all
hardware.

The switches should now be accessible, and the headphone

jack should be even with the front panel. Also, the LEDs above the
VFO knob should be visible. If any of these controls are not
properly situated, you may not have the Front Panel fully plugged
into the RF board.

Note: The coaxial jumper to be installed in the following steps is
referred to as W1 in the RF board parts list.

Cut a 2.6" (67 mm) length of RG-174 coax cable. Using a

sharp tool, remove about 3/8" (9 mm) of the coax jacket from
each end. Be careful not to nick the braid.

Figure 6-14

Separate the braid (shield) from the center conductor at both

ends (Figure 6-14). Clip off about half the strands of the braid close
to the jacket, then twist the remaining braid into a fine bundle.

Remove a small amount of insulation from the center

conductor. Use long-nose pliers to hold the center conductor while
stripping it, or you may pull it out of the coax jacket.

On the bottom of the RF board you'll find the component

outlines for two 2-pin connectors, J9 and J10. Install the coax cable
on the bottom of the board between these two points. The center
conductor should be inserted into pin 1 of each connector (square
pad), and the braid into pin 2 (round pad). Do not solder yet.

Make sure that the coax braid is not touching any adjacent

pads at either end, and that the coax is not covering the nearby
screw mounting hole. Solder the coax (on the bottom side of the
board). Trim the leads on the top side if there is excess lead length.