Elecraft K2 Owner's Manual - Manual (Page 62)

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LECRAFT ® 61
Insert R116's leads into L33's pads, then press the resistor down
directly on top of L33. The resistor's body should be partially recessed
into the "well" left in the center of the toroid (Figure 6-21).
Use the leads of R116 to hold L33 firmly to the board (Figure
6-21), bending them outward on the top side. Solder R116.
Figure 6-21
Solder L33's leads to the leads of the resistor points as shown in
Figure 6-22. Keep L33's leads as short as possible, and away from any
nearby component pads.
Trim off the excess portion of L33's leads. Note: Trimming fine
wire may be difficult with worn or poor-quality diagonal cutters. Be
careful not to stress L33's leads in the process. Use a magnifying glass
if necessary.
Figure 6-22
To ensure that R116 cannot short to the bottom cover, attach a
thin self-adhesive insulator to the bottom cover in the area directly
beneath L33. Electrical or other types of tape may be used.
i
D40 and D41 were added to the receiver I.F. circuit to prevent
saturation when a station a few feet away transmits on your frequency.
These diodes will be installed in the steps below.
On the bottom of the RF board, locate resistor R114, which is
near the power switch. Near R114 you'll find the 8 pads for I.F amp
U12, which is on the top side of the board (Figure 6-23).
Solder 1N4148 diodes D40 and D41 to the two round pads just to
the right of R114 (pads #3 and #4 of T7, which is on the top side). The
banded ends of the diodes go in opposite directions.
U12
R114
D40
D41
Figure 6-23
Visual Inspection
Examine the bottom side of the RF board carefully for unsoldered
pins, solder bridges, or cold solder joints. Since this is a large board,
you should break the examination up into three parts:
__ perimeter of the board __ front half __ back half
Examine the top side in the same manner.
Set S1 on the RF board to OFF position. (Plunger OUT).