Elecraft K60XV Manual User Manual
Page 9
9
If your K2 serial number is 2999 or lower (revision A or XC RF board), D19, D20, and R29 must be
soldered on the bottom of the board as shown in the left-hand illustration below. Solder the indicated leads
of the two varactor diodes to the pads of C71 (which is on the top side). Solder the cathode leads together,
then to one lead of R29. Solder the other lead of R29 to the indicated pad of R32 (which is on the top).
Position all three components close to the bottom of the PC board, and make sure their leads don't contact
any adjacent pads or traces. The installed height must be no more than 3/16" (5 mm).
The revision A or XC board must be modified in the area of 8-pin connector J13, on the bottom of the
board. First, cut the two traces that connect to pin 6 of J13, as indicated by the two "X" marks in the right-
hand illustration below (this is best done using the tip of an X-acto knife, or a very small, sharp, flat-blade
screwdriver). Next, cut a 2.5" (6.5 cm) length of green, solid-conductor hookup wire. Remove 1/8" (3 mm)
of insulation from each end. Solder this jumper to the indicated pads.
RFC10
MV
209
MV
209
10K
R29
D20
D19
C27
R4
RFC5
R48
R43
C104
RFC2
R44